Bibliography of P Systems




BIBTEX FILE

The complete bibliography can be downloaded as a bibtex file. Click here to download the zipped file (Updated: August 1, 2007)
Do not forget to read the "readme.txt" file for a detailed description of the 11 files with bibtext format (.bib) and the one with EndNote fomat (.enl).
Any suggestion concerning the bibtex file will be welcome.

Acknowledgements:
the Bibtex file is due to Rafael Nunez Hervas and Alfonso Ortega de la Puente, Departamento de Ingenieria Informatica,
Escuela Politecnica Superior, Universidad Autonoma de Madrid, Spain.


BOOKS

  1. Gh. Paun,
    Membrane Computing. An Introduction
    ,
    Springer-Verlag, Berlin, 2002 (420 + xii pages)
    ISBN 3-540-43601-4
    http://www.springer.de

    (Contents of the book: click HERE )

  2. M. Perez Jimenez, F. Sancho Caparrini,
    Computacion celular con membranas: Un modelo no convencional,
    Kronos Editorial, Sevilla, 2002 (107 pages)
    (Contents of the book: click HERE )

  3. M. Perez Jimenez, A. Romero Jimenez, F. Sancho Caparrini,
    Teoria de la complejidad en modelos de computacion celular con membranas,
    Kronos Editorial, Sevilla, 2002 (121 pages)
    (Contents of the book: click HERE )



COLLECTIVE VOLUMES

  1. C. Calude, M.J. Dinneen, Gh. Paun, Eds.,
    Pre-proceedings of Workshop on Multiset Processing,
    Curtea de Arges, Romania, August 2000,
    TR 140, CDMTCS, Univ. Auckland, New Zealand, 2000 (320 pages)
    Contents of the volume: click here

  2. C. Martin-Vide, Gh. Paun, Eds.,
    Pre-proceedings of Workshop on Membrane Computing,
    Curtea de Arges, Romania, August 2001,
    TR 16/01, Univ. Rovira i Virgili, Tarragona, Spain, 2001 (266 pages)
    Contents of the volume: click here

  3. C.S. Calude, Gh. Paun, G. Rozenberg, A. Salomaa, Eds.,
    Multiset Processing. Mathematical, Computer Science, Molecular Computing Points of View,
    Springer-Verlag, LNCS 2235, Berlin, 2001 (360 + viii pages)
    Contents of the volume: click here

  4. Romanian Journal of Information Science and Technology, 4, 1-2, (2001).
    Contents of the volume: click here

  5. Gh. Paun, C. Zandron, Eds.,
    Pre-proceedings of Workshop on Membrane Computing,
    Curtea de Arges, Romania, August 2002,
    MolCoNet Publication No 1, 2002 (394 pages)
    Contents of the volume: click here

  6. Fundamenta Informaticae, 49, 1-3 (2002).
    Contents of the volume: click here

  7. Gh. Paun, G. Rozenberg, A. Salomaa, C. Zandron, Eds.,
    Membrane Computing.
    International Workshop, WMC-CdeA 2002,
    Curtea de Arges, Romania, August 2002

    Springer-Verlag, LNCS 2597, Berlin, 2003 (423 + viii pages)
    Contents of the volume: click here

  8. M. Cavaliere, C. Martín-Vide, Gh. Paun, Eds.,
    Brainstorming Week on Membrane Computing;
    Tarragona, Feb 5-11 2003
    Contents of the volume: click here  

  9. A. Alhazov, C. Martín-Vide and Gh. Paun, Eds.,
    Pre-proceedings of the Workshop on Membrane Computing;
    Tarragona, July 17-22, 2003
    Contents of the volume: click here 

  10. Special issue (vol 2, nr 3, 2003) of Natural Computing journal devoted to  papers originating in the
    Brainstorming Week on Membrane Computing, February 2003, Tarragona, Spain
    Contents of the volume: click here

  11. Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini, Eds.,
    Second Brainstorming Week on Membrane Computing;
    Sevilla, Spain, Feb 2-7, 2004
    Contents of the volume: click here 

  12. G. Mauri, Gh. Paun, C. Zandron, Eds.,
    Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5),
    Milano, Italy, June 2004 (446 pages)
    Contents of the volume: click here

  13. Special issue of JUCS devoted to  papers originating in the Brainstorming Week on Membrane Computing, February 2004, Sevilla, Spain: Journal of Universal Computer Science, 10, 5, May 2004
    Contents of the volume: click here

  14. First Brainstorming Workshop on Uncertainty in Membrane Computing
    Palma de Mallorca, Spain, November 8-10, 2004
    Link to the proceedings volume: click here

  15. Special issue of New Generation Computing (vol 22, nr. 4, 2004)
    devoted to papers originating in the
    Brainstorming Week on Membrane Computing, February 2003, Tarragona, Spain
    Contents of the volume: click here

  16. G. Mauri, Gh. Paun, M.J. Perez-Jimenez, G. Rozenberg, A. Salomaa, Eds.,
    Membrane Computing. International Workshop WMC5, Milano, Italy, June 2004
    Selected Papers, Springer-Verlag, LNCS 3365, Berlin 2005
    Contents of the volume: click here

  17. G. Ciobanu, Gh. Paun, M.J. Perez-Jimenez, eds,
    Applications of Membrane Computing
    Springer-Verlag, Berlin, August 2005 (422+Viii pages)
    ISBN 3-540-25017-4
    Order link: http://www.springer.com/sgw/cda/frontpage/0,11855,5-156-22-60398121-0,00.html
    Contents of the volume: click here

  18. M.A. Gutierrez-Naranjo, Gh. Paun, M.J. Perez-Jimenez, eds.
    Proceedings of the ESF Exploratory Workshop on Cellular Computing (Complexity Aspects),
    Sevilla (Spain), January 31st - February 2nd, 2005
    Contents of the volume: click here

  19. M.A. Gutierrez-Naranjo, A. Riscos-Nunez, F.J. Romero-Campero, D. Sburlan, eds.
    Proceedings of the Third Brainstorming Week on Membrane Computing,
    Sevilla (Spain), January 31st - February 4th, 2005
    Contents of the volume: click here

  20. Special Issue of Soft Computing - A Fusion of Foundations, Methodologies and Applications devoted to papers originated in the “Second Brainstorming week on Membrane Computing”, Sevilla, Spain, February 2004
    Volume 9, Number 9, Sep. 2005
    Contents of the volume: click here

  21. R. Freund, G. Lojka, M. Oswald, Gh. Paun, Eds.,
    Pre-proceedings of the Sixth Workshop on Membrane Computing (WMC6),
    Vienna, Austria, July 18-21, 2005
    Contents of the volume: click here

  22. G. Ciobanu, Gh. Paun, eds,
    Pre-proceedings of the First International Workshop on Theory and Applications of P Systems
    Timisoara, Romania, September 26 - 27, 2005
    Contents of the volume: click here

  23. Special issue of International Journal of Foundations of Computer Science
    devoted to papers originating in the Third Brainstorming Week on Membrane Computing, Sevilla, Spain, February 2005
    Volume 17, number 1, February 2006
    Contents of the volume: click here

  24. R. Freund, Gh. Paun, G. Rozenberg, A. Salomaa, eds.,
    Membrane Computing, International Workshop, WMC6, Vienna, Austria, 2005, Selected and Invited Papers,
    LNCS 3850, Springer-Verlag, Berlin, 2006.
    Contents of the volume: click here

  25. M.A. Gutierrez-Naranjo, Gh. Paun, A. Riscos-Nunez, F.J. Romero-Campero, eds.,
    Proceedings of the Fourth Brainstorming Week on Membrane Computing, Volume I
    Sevilla, Spain, Jan 30–Feb 3, 2006
    Contents of volume I: click here

  26. C. Graciani Dıaz, Gh. Paun, A. Romero-Jimenez, F. Sancho-Caparrini, eds.,
    Proceedings of the Fourth Brainstorming Week on Membrane Computing
    Sevilla, Spain, Jan 30–Feb 3, 2006
    Contents of volume II: click here

  27. N. Busi, C. Zandron, eds.,
    Pre-proceedings of Workshop on Membrane Computing and Biologically Inspired Process Algebra, MeCBIC 2006,
    S. Servolo, Venice, Italy, July 9, 2006
    Contents of the volume: click here

  28. H.J. Hoogeboom, Gh. Paun, G. Rozenberg
    Pre-proceedings of Membrane Computing, International Workshop, WMC7,
    Leiden, The Netherlands, 2006
    Contents of the volume: click here

  29. L. Pan, Gh. Paun,
    Special issue of Progress in Natural Science,
    devoted to papers originating in the BIC-TA Conference, Wuhan, P.R. of China, September 2006
    Contents of the volume: click here

  30. M.A. Gutierrez-Naranjo, Gh. Paun, A. Romero-Jimenez, A. Riscos-Nunez, eds.
    Proceedings of the Fifth Brainstorming Week on Membrane Computing,
    Sevilla (Spain), January 29th - February 2, 2007
    Contents of the volume: click here

  31. G. Eleftherakis, P. Kefalas, Gh. Paun,
    Pre-proceedings of Membrane Computing, International Workshop, WMC8,
    Thessaloniki, Greece, june 2007
    Contents of the volume: click here



PHD THESES

  1. S. N. Krishna,
    Languages of P Systems. Computability and Complexity
    ,
    Indian Institute of Technology, Madras, India, 2002
    (Contents of the thesis: click HERE)

  2. C. Zandron,
    A Model for Molecular Computing: Membrane Systems,
    Dipartimento di Scienze dell'Informazione,
    Universita' degli Studi di Milano, Italy, 2002
    (Contents of the thesis: click HERE)

  3. F. Sancho-Caparrini,
    Verification of Programs in Unconventional Computing Models,
    Dpto. de Ciencias de la Computacion e Inteligencia Artificial
    Universidad de Sevilla, 2002
    (Contents of the thesis: click HERE)

  4. A. Romero Jimenez,
    Complexity and universality in cellular computing models,
    Dpto. de Ciencias de la Computacion e Inteligencia Artificial
    Universidad de Sevilla, Spain, 2003
    (Contents of the thesis: click HERE)

  5. M. Madhu,
    Studies of P systems as a model of cellular computing,
    Dept. of Computer Science and Engineering,
    Indian Institute of Technology Madras, India, 2003
    (Contents of the thesis: click HERE)

  6. A. Paun,
    Unconventional Models of Computation: DNA and Membrane Computing
    Department of Computer Science,
    The University of Western Ontario, London, Canada, 2003
    (Contents of the thesis: click HERE)

  7. M. Oswald,
    P Automata,
    Faculty of Computer Science,
    TU Vienna, Austria, 2003
    (Contents of the thesis: click HERE)

  8. D. Besozzi,
    Computational and modelling power of P systems,
    Universita' degli Studi di Milano, Italy, 2004
    (Contents of the thesis: click HERE)

  9. L. Lakshmanan,
    On the Crossroads of P Systems and Contextual Grammars: Variants, Computability, Complexity and Efficiency,
    Dept. of Mathematics, Indian Institute of Technology, Madras, India, 2004.

  10. P. Frisco,
    Theory of Molecular Computing. Splicing and Membrane Systems,
    Leiden University, The Netherlands, 2004.
    (Contents of the thesis: click HERE)

  11. F. Arroyo Montoro
    Structures and Biolanguage to Simulate Membrane Computing
    Univeridad Politecnica de Madrid, Madrid, Spain, 2004.
    (Contents of the thesis: click HERE)

  12. S. Verlan
    Head systems and application to bio-informatics
    LITA, Universite' de Metz, Metz, France, 2004.
    Also available in French: Systemes de Head et applications a la bioinformatique
    (Contents of the thesis: click HERE)

  13. A. Riscos Nunez
    Cellular Programming: Efficient Resolution of NP-Complete Numerical Problems
    Universidad de Seville, Seville, Spain, 2004.
    (Contents of the thesis: click HERE)

  14. Ludek Cienciala
    P automata
    University of Ostrava, Ostrava, Czech Republic, 2005.
    (Contents of the thesis: click HERE)

  15. F. Bernardini
    Membrane Systems for Molecular Computing and Biological Modelling
    University of Sheffield, Sheffield, UK, 2005.

  16. M. Cavaliere
    Evolution, communication, observation: From biology to membrane computing and back
    University of Sevilla, Spain, 2006.
    (Contents of the thesis: click HERE)

  17. D. Sburlan
    Promoting and Inhibiting Contexts in Membrane Computing
    University of Sevilla, Spain, 2006.

  18. A. Alhazov
    Communication in Membrane Systems with Symbol Objects
    Rovira i Virgili University, Tarragona, Spain, 2006.
    (Contents of the thesis: click HERE)

  19. B. Popa
    Membrane Systems with Limited Parallelism
    College of Engineering and Science,
    Louisiana Tech University, Ruston, USA, 2006.
    (Contents of the thesis: click HERE)

  20. T. O. Ishdorj
    Membrane Computing, Neural Inspiration, Gene Assembly in Ciliates
    Universidad de Sevilla, Spain, 2007.
    (Contents of the thesis: click HERE)

  21. L. Bianco
    Membrane Models of Biological Systems
    Universita' degli Studi di Verona, Italy, 2007.
    (Contents of the thesis: click HERE)

  22. S. Hemalatha
    A Study on Rewriting P Systems, Splicing Grammar Systems and Picture Array Languages
    University of Chennai, India, 2007

  23. H. Liang, 
    Research on Membrane Computing. Optimization Methods
    Institute of Advanced Process Control, Zhejiang University, China, 2007
    (Contents of the thesis: click HERE)




LAST ADDED ENTRIES TO THE
GENERAL BIBLIOGRAPHY






November 23, 2007
  1. M. Oswald, R. Freund, Partial halting in P systems, Intern. J. Found. Computer Sci., 18, 6 (2007), 1215--1225.
  2. T.Y. Nishida, Membrane algorithm with brownian subalgorithm and genetic subalgorithm, Intern. J. Found. Computer Sci., 18, 6 (2007), 1353--1360.
  3. Y. Gao, H.J. Hoogeboom, P systems with single passenger carriers, Intern. J. Found. Computer Sci., 18, 6 (2007), 1227--1235.
  4. O.H. Ibarra, S. Woodworth, Characterizing regular languages by spiking neural P systems, Intern. J. Found. Computer Sci., 18, 6 (2007), 1247--1256.
  5. G. Pardini, Topological Calculus of Looping Sequences, Master Thesis, Pisa Univ., 2007.
  6. G. Caravagna, An Intermediate Language for the Simulation of Biological Systems, Master Thesis, Pisa Univ., 2007.
  7. A. Castellini, V. Manca, L. Marchetti, MP graphs and hybrid Petri nets, NICSO 2007.
  8. P. Kefalas, I. Stamatopoulou, M. Gheorghe, Principles of transforming communicating X-machines to population P systems, ACMC/FCT 2007 Workshop, Budapest.
  9. F. Bernardini, M. Gheorghe, M. Margenstern, S. Verlan, How to synchronize the activity of all components of a P system?  ACMC/FCT 2007 Workshop, Budapest.
  10. R. Borrego-Ropero, D. Diaz-Pernil, M.J. Perez-Jimenez, Tissue simulator: A graphical tool for tissue P systems, ACMC/FCT 2007 Workshop, Budapest.
  11. R. Freund, M. Ionescu, M. Oswald, Extended spiking neural P systems with decaying spikes and/or total spiking, ACMC/FCT 2007 Workshop, Budapest.
  12. B. Aman, G. Ciobanu, Structural properties and observability in membrane systems, Proc. SYNASC 2007, Timi\c soara.
  13. B. Aman, G. Ciobanu, On the relationship between P systems and mobile ambients, FML Technical Report, http://iit.iit.tuiasi.ro/TR/, 2006.
  14. M. Ionescu, Gh. Paun, T. Yokomori, Spiking neural P systems with an exhaustive use of rules, Intern. J. Unconventional Computing, 3, 2 (2007), 135--154.
  15. Gh. Paun, A quick overview of membrane computing with some details about spiking neural P systems,  Frontiers of Computer Science in China, 1,1 (2007), 37--49.
  16. Gh. Paun, Spiking neural P systems. A tutorial, Bulletin of the EATCS, 91 (Febr. 2007), 145--159.
  17. Gh. Paun, M.J. Perez-Jimenez, G. Rozenberg, Computing morphisms by spiking neural P systems, Intern. J. Found. Computer Sci., 18, 6 (2007), 1371--1382.
  18. Gh. Paun, Spiking neural P systems. Power and efficiency, Bio-Inspired Modeling of Cognitive Tasks, Proc. IWINAC 2007 (J. Mira, J.R. Alvarez, eds.), Mar Menor, 2007, LNCS 4527, 153--169.
  19. Gh. Paun, Membrane computing as a framework for bio-modeling (an informal glimpse), Proc. Algebraic Biology 2007 (H. Anai, K. Horimoto, T. Kutsia, eds.), Castle Hagenburg, Austria, July 2007, LNCS 4545, Springer-Verlag, 2007, 23--35.
  20. Gh. Paun, Membrane computing, Encyclopedia of Complexity and Systems Science, Springer, in press.
  21. Gh. Paun,  Spiking neural P systems used as acceptors and transducers, Pre-proc. CIAA 2007, Prague, July 2007, 1-4.
  22. Gh. Paun, Spiking neural P systems with astrocyte-like control, JUCS, in press.
  23. O.H. Ibarra, Gh. Paun, Membrane Computing: A General View, Annals of European Academy of Sciences, in press.
  24. Gh. Paun, M.J. Perez-Jimenez, Spiking neural P systems. An overview, in vol. Advancing Artificial Intelligence through Biological Process Applications (Ana B. Porto, A. Pazos, W. Buno, eds.), Idea Group Publ., London, 2008, in press.


GENERAL BIBLIOGRAPHY

  1. J. Aguado, T. Balanescu, T. Cowling, M. Gheorghe, F. Ipate, P Systems with Replicated Rewriting and Stream X-Machines, Pre-Proceedings of Workshop on Membrane Computing, Curtea de Arges, Romania, August 2001, Technical Report 17/01 of Research Group on Mathematical Linguistics, Rovira i Virgili University, Tarragona, Spain, 2001, 7-18 and Fundamenta Informaticae 49, 1-3 (2002), 17-33.
  2. S. Aguzzoli, I.I. Ardelean, D. Besozzi, B. Gerla, C. Manara, P systems under uncertainty: the case of transmembrane proteins, First Brainstorming Workshop on Uncertainty in Membrane Computing, Palma de Mallorca, Spain, November 2004, 107-118.
  3. S. Aguzzoli, D. Besozzi, B. Gerla, C. Manara, P systems with vague boundaries: the t-norm approach, First Brainstorming Workshop on Uncertainty in Membrane Computing, Palma de Mallorca, Spain, November 2004, 97-106.
  4. G. Alford, Membrane systems with heat control, Pre-Proceedings of Second Workshop on Membrane Computing, Curtea de Arges, Romania, August 2002, 7-14.
  5. A. Alhazov, Communication in Membrane Systems with Symbol Objects, PhD Thesis, Rovira i Virgili University, Tarragona, Spain, 2006.
  6. A. Alhazov, Generating Classes of Languages by P Systems and Other Devices, Rovira i Virgili Univ., Tech. Rep. No. 26, M. Cavaliere, C. Martín-Vide, Gh. Paun (Eds), Brainstorming Week on Membrane Computing; Tarragona, Feb 5-11 2003, 18-22.
  7. A. Alhazov, Minimizing Evolution-Communication P Systems and EC P automata, Rovira i Virgili Univ., Tech. Rep. No. 26, M. Cavaliere, C. Martín-Vide, Gh. Paun (Eds), Brainstorming Week on Membrane Computing; Tarragona, Feb 5-11 2003, 23-31, and New Generation Computing, 22(4):299-310, August 2004.
  8. A. Alhazov, A Note on P Systems with Activators, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 16-19.
  9. Artiom Alhazov, Maximally Parallel Multiset-Rewriting Systems: Browsing the Configurations, Grammars, submitted, 2004 AND In: M.A. Gutierrez-Naranjo, A. Riscos-Nunez, F.J. Romero-Campero, D. Sburlan: TR 01/2005, University of Seville, Third Brainstorming Week on Membrane Computing, Sevilla, 2005, 1-10.
  10. A. Alhazov, Minimal Parallelism and Number of Membrane Polarizations, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 74-87
  11. A. Alhazov, Number of Proton/Bi-stable Catalysts and Membrane in P Systems. Time Freeness, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005, 102-122
  12. A. Alhazov, On Determinism of Evolution-Communication P Systems, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 11-15, and Journal of Universal Computer Science, 10, 5, (2004), 502-508.
  13. A. Alhazov, P systems without multiplicities of symbol-objects. Information Processing Letters, accepted for publication, 2005.
  14. A. Alhazov, Solving SAT by symport/antiport P systems with membrane division, Proceedings of the ESF Exploratory Workshop on Cellular Computing (Complexity Aspects), Sevilla (Spain), January 31st - February 2nd, 2005, 1-6
  15. A. Alhazov, C. Bonchis, G. Ciobanu, C. Isbasa, Encodings and Arithmetic Operations in P Systems, Vol. I of Proc. of the Fourth Brainstorming Week on Membrane Computing, Sevilla (Spain), Jan 30 - Feb 3, 2006, 1-28.
  16. A. Alhazov, M. Cavaliere, Evolution-communication P systems: Time-freeness, Proceedings of the Third Brainstorming Week on Membrane Computing, Sevilla (Spain), January 31st - February 4th, 2005, 11-18
  17. A. Alhazov, M. Cavaliere: Proton Pumping P Systems. In: C. Martin-Vide, G. Mauri, Gh. Paun, G. Rozenberg, A. Salomaa: Membrane Computing, International Workshop, WMC 2003, Tarragona, 2003, Revised Papers, Lecture Notes in Computer Science 2933, Springer, 2004, pp. 1-18.
  18. A. Alhazov, M. Cavaliere, Proton pumping P systems, A. Alhazov, C. Martín-Vide and Gh. Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 1-16.
  19. A. Alhazov, R. Freund: On the Efficiency of P Systems with Active Membranes and Two Polarizations. In: G. Mauri, Gh. Paun, M.J. Perez-Jimenez, G. Rozenberg, A. Salomaa: Membrane Computing, International Workshop, WMC 2004, Milan, 2004, Revised
    Selected and Invited Papers, Lecture Notes in Computer Science 3365, Springer, 2005, pp. 146-160, and in G. Mauri, Gh. Paun, C. Zandron: Fifth Workshop on Membrane Computing (WMC5), University of Milano-Bicocca, Milan, 2004, 81-94.
  20. A. Alhazov, R. Freund, P systems with one membrane and symport/antiport rules of five symbols are computationally complete, Proceedings of the Third Brainstorming Week on Membrane Computing, Sevilla (Spain), January 31st - February 4th, 2005, 19-28
  21. A. Alhazov, R. Freund, A. Leporati, M. Oswald, C. Zandron, (Tissue) P systems with unit rules and energy assigned to membranes. Fundamenta Informatice, 2006.
  22. A. Alhazov, R. Freund, M. Oswald, Cell/symbol complexity of tissue P systems with symport/antiport rules, Intern. J. Found. Computer Sci., 17, 1(2006), 3-26.
  23. A. Alhazov, R. Freund, M. Oswald, Symbol/Membrane Complexity of P Systems with Symport/Antiport Rules, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005, 123-146
  24. A. Alhazov, R. Freund, M. Oswald, Tissue P systems with antiport rules and small numbers of symbols and cells, Proceedings of the ESF Exploratory Workshop on Cellular Computing (Complexity Aspects), Sevilla (Spain), January 31st - February 2nd, 2005, 7-22, and in C. De Felice, A. Restivo, Developments in Language Theory: 9th International Conference, DLT 2005, Palermo, Italy, 2005, Proceedings, Lecture Notes in Computer Science 3572, Springer, 2005, 100-111.
  25. A. Alhazov, R. Freund, M. Oswald, M. Slavkovik, Extended Spiking Neural P Systems Generating Strings and Vectors of Non-Negative Integers, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 88-101
  26. A. Alhazov, R. Freund, M. Oswald, S. Verlan, Partial Versus Total Halting in P Systems, in Proceedings of the Fifth Brainstorming Week on Membrane Computing, M.A. Gutierrez-Naranjo, Gh. Paun, A. Romero-Jimenez, A. Riscos-Nunez, (eds.), Sevilla (Spain), January 29th - February 2, 2007, 1-20
  27. A. Alhazov, R. Freund, Gh. Paun: Computational Completeness of P Systems with Active Membranes and Two Polarizations. In: M. Margenstern: Machines, Computations, and Universality, International Conference, MCU 2004, Saint Petersburg, 2004, Revised Selected Papers, Lecture Notes in Computer Science 3354, Springer, 2005, pp. 82-92.
  28. A. Alhazov, R. Freund, Gh. Paun,  P Systems with Active Membranes and Two Polarizations, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.),
    Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 20-36.
  29. A. Alhazov, R. Freund, A. Riscos-Nunez, Membrane division, restricted membrane creation and object complexity in P systems. Submitted, 2006.
  30. A. Alhazov, R. Freund, A. Riscos-Nunez, One and Two Polarizations, Membrane Creation and Objects Complexity in P Systems, in G. Ciobanu, Gh. Paun, Pre-Proc. of First International Workshop on Theory and Application of P Systems, Timisoara, Romania, September 26-27, 2005, 9-18
  31. A. Alhazov, R. Freund, Yu. Rogozhin, Some optimal results on symport/antiport P systems with minimal cooperation, Proceedings of the ESF Exploratory Workshop on Cellular Computing (Complexity Aspects), Sevilla (Spain), January 31st - February 2nd, 2005, 23-36
  32. A. Alhazov, T.-O. Ishdorj, Membrane Operations in P Systems with Active Membranes, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.),
    Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 37-44.
  33. A. Alhazov, M. Margenstern, V. Rogozhin, Y. Rogozhin, S. Verlan, Communicative P systems with minimal cooperation, Membrane Computing. International Workshop WMC5, Milano, Italy, 2004, LNCS 3365, Springer, 2005, 161-177.
  34. A. Alhazov, C. Martin-Vide, L. Pan, Solving Graph Problems by P Systems with Restricted Elementary Active Membranes, Aspects of Molecular Computing, LNCS 2950, Springer, Berlin, 2004, 1-22.
  35. A. Alhazov, C. Martin-Vide, L. Pan, Solving a PSPACE-complete problem by P systems with restricted active membranes, Fundamenta Informaticae, 58, 2(2003), 67-77.
  36. A. Alhazov, L. Pan, Polarizationless P systems with active membranes, Grammars, 7:141-159, 2004.
  37. A. Alhazov, L. Pan, Gh. Paun: Trading polarizations for labels in P systems with active membranes. Acta Informaticae, volume 41, numbers 2-3, 2004, pp. 111-144.
  38. A. Alhazov, M.J. Perez-Jimenez, Uniform Solution to QSAT Using Polarizationless Active Membranes, Vol. I of Proc. of the Fourth Brainstorming Week on Membrane Computing, Sevilla (Spain), Jan 30 - Feb 3, 2006, 29-40.
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  261. H. Chen, T.-O. Ishdorj, Gh. Paun, M.J. Perez-Jimenez, Handling languages with spiking neural P systems with extended rules, Romanian J. Information Sci. and Technology, 9, 3 (2006), 151--162
  262. H. Chen, T.-O. Ishdorj, Gh. Paun, M.J. Perez-Jimenez, Spiking Neural P Systems with Extended Rules, Vol. I of Proc. of the Fourth Brainstorming Week on Membrane Computing, Sevilla (Spain), Jan 30 - Feb 3, 2006,  241-266.
  263. S. Cheruku, A. Paun, F.J. Romero-Campero, M.J. Perez-Jimenez, O.H. Ibarra, Simulating FAS-induced apoptosis by using P systems, Pre-proc. of Int. Conf. on Bio-Inspired Computing - Theory and Applications, BIC-TA 2006, Membrane Computing Section, Wuhan, China, Sept. 2006, 71-81
  264. L. Cienciala, P Automata with Priorities Working in Sequential and Maximally Parallel Mode, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 186-195.
  265. L. Cienciala, L. Ciencialova, Membrane automata with priorities, Journal of Computer Science and Technology, 19, 1 (2004), 89--97
  266. L. Cienciala, L. Ciencialova, P automata with priorities, Artiom Alhazov, Carlos Martín-Vide and Gheorghe Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 161-168
  267. L. Cienciala, L. Ciencialova, P. Frisco, P. Sosik, On the power of deterministic and sequential communicating P systems, Intern. J. Found. Computer Sci., 18, 2 (2007), 415--431
  268. L. Cienciala, L. Ciencialova, A. Kelemenova, On the number of agents in P colonies, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 227-242
  269. L. Cienciala, A. Kelemenova, Zivot ve svete symbolu: pocitani pomoci membran, in vol "Kognice a umely zivot II" (J. Kelemen, V. Kvasnicka, eds), Slezska Univ., Opava, 2002.
  270. L. Ciencialova, L, Cienciala, Variations on the theme: P colonies, Proc. First Intern. Workshop WFM06 (D. Kol, A. Meduna, eds.), Ostrava, 2006, 27--34
  271. G. Ciobanu, A programming perspective of the membrane computing, Proc. of ICCCC 2006, Oradea, Romania, June 2006, 13--22.
  272. G. Ciobanu, Cellular meta-programming, Pre-Proc. Unconventional Programming Paradigms, UPP04, Le Mont Saint-Michel, September 2004, 55--63.
  273. G. Ciobanu, Distributed computing in P systems with antiport communication, submitted, 2002
  274. G. Ciobanu, Modeling Cell--Mediated Immunity by Means of P Systems,in G. Ciobanu, Gh. Paun, M.J. Perez-Jimenez, eds., Applications of Membrane Computing, Springer-Verlag, Berlin, 2005, 157--178.
  275. G. Ciobanu, Pumps Systems of Membranes, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 130-133.
  276. G. Ciobanu, O. Andrei, D. Lucanu, Structural Operational Semantics of P Systems, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005, 1-23
  277. G. Ciobanu, V. Ciubotariu, B. Tanasa, A Computational Model of Membrane Transportation, submitted, 2002.
  278. G. Ciobanu, L. Cornacel, Probabilistic transitions for P systems, Pre-proc. of Int. Conf. on Bio-Inspired Computing - Theory and Applications, BIC-TA 2006, Membrane Computing Section, Wuhan, China, Sept. 2006, 82-92
  279. G. Ciobanu, R. Desai, A. Kumar, Membrane systems and distributed computing, Pre-Proceedings of Second Workshop on Membrane Computing, Curtea de Arges, Romania, August 2002, 145-162, and in Gh. Paun, G. Rozenberg, A. Salomaa, C. Zandron, Eds., Membrane Computing. International Workshop, WMC-CdeA 2002, Curtea de Arges, Romania, August 2002, Springer-Verlag, LNCS 2597, Berlin, 2003,187-202.
  280. C. Ciobanu, D. Dumitriu, D. Huzum, G. Moruz, B. Tanasa, Client-Server P Systems in Modeling Molecular Interaction, in Gh. Paun, G. Rozenberg, A. Salomaa, C. Zandron, Eds., Membrane Computing. International Workshop, WMC-CdeA 2002, Curtea de Arges, Romania, August 2002, Springer-Verlag, LNCS 2597, Berlin, 2003, 203-218.
  281. G. Ciobanu, V.M. Gontineac, Algebraic and Coalgebraic Aspects of Membrane Computing, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005, 289-311
  282. G. Ciobanu, M. Gontineac, Mealy multiset automata, Intern. J. Found. Computer Sci., 17, 1 (2006), 111--126
  283. G. Ciobanu, M. Gontineac, Mealy membrane automata and P systems complexity, Proceedings of the ESF Exploratory Workshop on Cellular Computing (Complexity Aspects), Sevilla (Spain), January 31st - February 2nd, 2005, 149-164
  284. G. Ciobanu, M. Gontineac, Networks of Mealy multiset automata, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007,  243- 254
  285. G. Ciobanu, M. Gontineac, P Machines: An Automata Approach to Membrane Computing, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 274-289
  286. G. Ciobanu, D. Lucanu, What is an event for membrane systems?, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 255-266
  287. G. Ciobanu, D. Paraschiv, Membrane Software. A P System Simulator, Pre-Proceedings of Workshop on Membrane Computing, Curtea de Arges, Romania, August 2001, Technical Report 17/01 of Research Group on Mathematical Linguistics, Rovira i Virgili University, Tarragona, Spain, 2001, 45-50 and  Fundamenta Informaticae 49, 1-3 (2002), 61-66.
  288. G. Ciobanu, Gh. Paun, L. Pan, M.J. Perez-Jimenez, P systems with minimal parallelism, submitted, 2005.
  289. G. Ciobanu, Gh. Paun, M.J. Perez-Jimenez, eds., Applications of Membrane Computing, Springer-Verlag, Berlin, 2006 (442 + viii pages).
  290. G. Ciobanu, Gh. Paun, M.J. Pérez-Jiménez, On the branching complexity of P systems, Proceedings of the ESF Exploratory Workshop on Cellular Computing (Complexity Aspects), Sevilla (Spain), January 31st - February 2nd, 2005, 165-176
  291. G. Ciobanu, Gh. Paun, Gh. Stefanescu, Sevilla Carpets Associated with P Systems, Rovira i Virgili Univ., Tech. Rep. No. 26, M. Cavaliere, C. Martín-Vide, Gh. Paun (Eds), Brainstorming Week on Membrane Computing; Tarragona, Feb 5-11 2003,135-140.
  292. G. Ciobanu, Gh. Paun, Gh. Stefanescu, P transducers, New Generation Computing, 24, 1(2006), 1-28.
  293. G. Ciobanu, D. Petcu, P accelerators: Parallelization of sequential simulators, Proceedings of the ESF Exploratory Workshop on Cellular Computing (Complexity Aspects), Sevilla (Spain), January 31st - February 2nd, 2005, 177-186
  294. G. Ciobanu, B. Tanasa, Gene Expression by Software Mechanisms, Pre-Proceedings of Workshop on Membrane Computing, Curtea de Arges, Romania, August 2001, Technical Report 17/01 of Research Group on Mathematical Linguistics, Rovira i Virgili University, Tarragona, Spain, 2001, 51-62 and  Fundamenta Informaticae 49, 1-3 (2002), 67-80.
  295. G. Ciobanu, B. Tanasa, D. Dumitriu, D. Huzum, G. Moruz, Molecular Networks as Communicating Membranes, Pre-Proceedings of Second Workshop on Membrane Computing, Curtea de Arges, Romania, August 2002, 163-176.
  296. G. Ciobanu, G. Wenyuan, A parallel implementation of transition P systems, A. Alhazov, C. Martín-Vide and Gh. Paun (Eds.): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 169-184
  297. A. Cordon-Franco, M.A. Gutierrez-Naranjo, M.J. Perez-Jimenez, Looking for P Truth, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 134-138.
  298. A. Cordon-Franco, M.A. Gutierez-Naranjo, M.J. Perez-Jimenez, A. Riscos-Nunez, Cellular solutions to some numerical NP-complete problems. A Prolog implementation, Molecular Computational Models. Unconventional Approaches (M. Gheorghe, ed.), Idea-Group, London, 2004, 115--149.
  299. A. Cordon-Franco, M.A. Gutierrez-Naranjo, M.J. Perez-Jimenez, A. Riscos-Nunez, Exploring Computation Trees Associated with P Systems, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 196-204.
  300. A. Cordon-Franco, M.A. Gutierrez-Naranjo, M.J. Perez-Jimenez, A. Riscos-Nunez, Weak Metrics on Configurations of a P System, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 139-151.
  301. A. Cordon-Franco, M.A. Gutierrez-Naranjo, M.J. Perez-Jimenez, A. Riscos-Nunez, F. Sancho-Caparrini, Implementing in Prolog an effective cellular solution for the Knapsack problem, A. Alhazov, C. Martín-Vide and Gh. Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 185-196
  302. A. Cordón-Franco, M.A. Gutiérrez-Naranjo, M.J. Pérez-Jiménez, F. Sancho-Caparrini, A Prolog Simulator for Deterministic P Systems with Active Membranes, Rovira i Virgili Univ., Tech. Rep. No. 26, M. Cavaliere, C. Martín-Vide, Gh. Paun (Eds), Brainstorming Week on Membrane Computing; Tarragona, Feb 5-11 2003, 141-154, and New Generation Computing, 22(4):349-363, Aug. 2004.
  303. A. Cordón-Franco, F. Sancho-Caparrini, A Note on Complexity Measures for Probabilistic P Systems, Journal of Universal Computer Science, 10, 5, (2004), 559-566.
  304. A. Cordón-Franco, F. Sancho-Caparrini, Non-discrete P Systems, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 205-207.
  305. E. Csuhaj-Varjú, EP-colonies: Micro-organisms in a cell-like environment, Proceedings of the Third Brainstorming Week on Membrane Computing, Sevilla (Spain), January 31st - February 4th, 2005, 123-130
  306. E. Csuhaj-Varju, On Gemmating P Systems, EMCC Workshop, Vienna, November 2003.
  307. E. Csuhaj-Varju, P automata: Models, Results, and Research Topics, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 1-11.
  308. C. Csuhaj-Varjú, A. Di Nola, Gh. Paun, M.J. Pérez-Jiménez, G. Vaszil, Editing configurations of P systems, Proceedings of the Third Brainstorming Week on Membrane Computing, Sevilla (Spain), January 31st - February 4th, 2005, 131-154
  309. E. Csuhaj-Varju, R. Freund, D. Sburlan, Modeling the Dynamical Parallelism of Bio-Systems, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 290-310
  310. E. Csuhaj-Varju, O.H. Ibarra, G. Vaszil, On the computational complexity of P automata, Pre-Proc. of Intern. Meeting on DDNA Computing (DNA10), Milano, june 2004 (C. Ferretti, G. Mauri, C. Zandron, eds.), Univ. Milano-Bicocca, Italy, 2004, 97-106.
  311. E. Csuhaj-Varju, M. Margenstern, G. Vaszil, P Colonies with a Bounded Number of Cells and Programs, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 311-322
  312. E. Csuhaj-Varju, M. Margenstern, G. Vaszil, S. Verlan, Small Computationally Complete Symport/Antiport P Systems, Vol. I of Proc. of the Fourth Brainstorming Week on Membrane Computing, Sevilla (Spain), Jan 30 - Feb 3, 2006,  267-281.
  313. E. Csuhaj-Varju, C. Martin-Vide, Gh. Paun, A. Salomaa, From Watson-Crick L Systems to Darwinian P Systems, Rovira i Virgili Univ., Tech. Rep. No. 26, M. Cavaliere, C. Martín-Vide, Gh. Paun (Eds), Brainstorming Week on Membrane Computing; Tarragona, Feb 5-11 2003, 155-170, Natural Computing, 2 (3), 229-318, Aug. 2003.
  314. E. Csuhaj-Varju, Gh. Paun, G. Vaszil, Grammar systems vs. membrane computing: The case of CD grammar systems, submitted, 2004.
  315. E. Csuhaj-Varju, Gh. Paun, G. Vaszil, Grammar systems vs. membrane computing: The case of PC grammar systems, submitted, 2004.
  316. E. Csuhaj-Varjú, Gy. Vaszil, New Results and Research Directions Concerning P Automata, Accepting P Systems with Communication Only, Rovira i Virgili Univ., Tech. Rep. No. 26, M. Cavaliere, C. Martín-Vide, Gh. Paun (Eds), Brainstorming Week on Membrane Computing; Tarragona, Feb 5-11 2003, 171-179.
  317. E. Csuhaj-Varju, G. Vaszil, P automata, Pre-Proceedings of Second Workshop on Membrane Computing, Curtea de Arges, Romania, August 2002, 177-192.
  318. E. Csuhaj-Varju, G. Vaszil, P Automata or Purely Communicating Accepting P Systems, in Gh. Paun, G. Rozenberg, A. Salomaa, C. Zandron, Eds., Membrane Computing. International Workshop, WMC-CdeA 2002, Curtea de Arges, Romania, August 2002, Springer-Verlag, LNCS 2597, Berlin, 2003, 219-233
  319. E. Csuhaj-Varju, G. Vaszil, P systems with string objects and with communication by request, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 267-278
  320. E. Csuhaj-Varju, G. Vaszil, Reducing the Size of Extended Gemmating P Systems, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 208-220.
  321. E. Csuhaj-Varju, G. Vaszil, The Computational Complexity of P Automata, Accepting P Systems with Communication Only, EMCC Workshop, Vienna, November 2003.
  322. E. Czeizler, Self-activating P systems, Pre-Proceedings of Second Workshop on Membrane Computing, Curtea de Arges, Romania, August 2002, 193-206, and in Gh. Paun, G. Rozenberg, A. Salomaa, C. Zandron, Eds., Membrane Computing. International Workshop, WMC-CdeA 2002, Curtea de Arges, Romania, August 2002, Springer-Verlag, LNCS 2597, Berlin, 2003, 234-246.
  323. S. Dal Zilio, E. Formenti, On the dynamics of PB systems, A. Alhazov, C. Martín-Vide and Gh. Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 197-208.
  324. Z. Dang, O.H. Ibarra, On P systems operating in sequential and limited parallel modes, Workshop on Descriptional Complexity of Formal Systems, London-Ontario, 2004, 164-177.
  325. Z. Dang, O.H. Ibarra, C. Li, Decidability of model-checking P systems. Submitted, 2006
  326. Z. Dang, O.H. Ibarra, C. Li, G. Xie, On model-checking of P systems, Proc. UC05, LNCS 3699, Springer, 2005, 82-93.
  327. D.K. Das, T. Renz, A simulator model for P systems with active membranes, Proc. 2006 IEEE Conference on Emerging Technologies - Nanoelectronics,Singapore, January 2006, 338-340
  328. J. Dassow, E. Csuhaj-Varju, On the Syntactic Complexity of Darwinian Membrane Systems, Vol. II of Proc. of the Fourth Brainstorming Week on Membrane Computing, 1-16.
  329. J. Dassow, Gh. Paun, Concentration Controlled P Systems, Acta Cybernetica, 15, 1 (2001), 9-25.
  330. J. Dassow, Gh. Paun, On the Power of Membrane Computing, J. of Universal Computer Sci., 5, 2 (1999), 33-49 (www.iicm.edu/jucs).
  331. J. Dassow, Gh. Paun, G. Thierrin, S. Yu, Tree-Systems of Morphisms, Acta Informatica, 38, 2 (2001), 131-153.
  332. J. Dassow, G. Vaszil, P Finite Automata and Regular Languages Over Countably Infinite Alphabets, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 323-336
  333. G. Delzanno, L. Van Begin, On the dynamics of PB systems with volatile membranes, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 279-300
  334. K.S. Dersanambika, K. Krithivasan, Contextual Array P Systems, Intern. J. of Computer Mathematics, 81 (8), 955-969, Aug. 2004
  335. K.S. Dersanambika, K. Krithivasan, H.K. Agarwal, J. Gupta, Hexagonal contextual array P systems. In Formal Models, Languages and Applications (K.G. Subramanian, K. Rangarajan, M. Mukund, eds.), World Scientific, Singapore, 2006.
  336. K.S. Dersanambika, K. Krithivasan, K.G. Subramanian, P systems generating hexagonal picture languages, A. Alhazov, C. Martín-Vide and Gh. Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 209-221
  337. D. Dıaz-Pernil, M.A. Gutierrez-Naranjo, M.J. Perez-Jimenez, Solving 3-COL with Tissue P Systems, Vol. II of Proc. of the Fourth Brainstorming Week on Membrane Computing, 17-30.
  338. A. Di Nola, Gh. Paun, M. Perez Jimenez, F. Rossello, (Imprecise Topic About) Handling Imprecision in P Systems, First Brainstorming Workshop on Uncertainty in Membrane Computing, Palma de Mallorca, Spain, November 2004, 1-10.
  339. D. Diaz-Pernil, M.A. Gutierrez-Naranjo, M.J. Perez-Jimenez, A. Riscos-Nunez, An efficient solution to 3-COL with tissue P systems, Proc. MeCBIC 2006 (N. Busi, C. Zandron, eds.), Venice, 2006.
  340. D. Dıaz-Pernil, M.A. Gutierrez-Naranjo, M.J. Perez-Jimenez, A. Riscos-Nunez, Subset Sum with Tissue P Systems with Cell Division, in Proceedings of the Fifth Brainstorming Week on Membrane Computing, M.A. Gutierrez-Naranjo, Gh. Paun, A. Romero-Jimenez, A. Riscos-Nunez, (eds.), Sevilla (Spain), January 29th - February 2, 2007, 113-130
  341. R. Domine, Theorem proving using membrane computing, Master Thesis, Dresden University, 2001
  342. Z. Dang, O.H. Ibarra, S. Woodworth, H.C. Yen, On Symport/Antiport Systems and Semilinear Sets, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005, 312-335
  343. D. Diaz-Pernil, M.A. Gutierrez-Naranjo, M.J. Perez-Jimenez, A. Riscos-Nunez, A cellular solution to subset sum using division of non-elementary membranes and dissolution, with time and initial resources bounded by log $k$, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 301-316
  344. A. Dovier, C. Piazza, G. Rossi, Multiset Constraints and P Systems, in Multiset Processing. Mathematical, Computer Science, and Molecular Computing Points of View (C.S. Calude, Gh. Paun, G. Rozenberg, A. Salomaa, eds.), Lecture Notes in Computer Science 2235, Springer-Verlag, 2001, 103-122.
  345. G. Eleftherakis, P. Kefalas, Gh. Paun (eds.), Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, June 2007.
  346. L. Fernandez, F. Arroyo, I. Garcia, A. Gutierrez, Parallel software architectures analysis for implementing P systems.
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  347. L. Fernandez, F. Arroyo, J.A. Tejedor, J. Castellanos, Massively Parallel Algorithm for Evolution Rules Application in Transition P Systems, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 337-343
  348. L. Fernandez, V.J. Martinez, F. Arroyo, L.F. Mingo, A Hardware Circuit for Selecting Active Rules in Transition P Systems, in G. Ciobanu, Gh. Paun, Pre-Proc. of First International Workshop on Theory and Application of P Systems, Timisoara, Romania, September 26-27, 2005, 45-48
  349. Cl. Ferretti, G. Mauri, Gh. Paun, Cl. Zandron, On Three Variants of P Systems with String-Objects, Pre-Proceedings of Workshop on Membrane Computing, Curtea de Arges, Romania, August 2001, Technical Report 17/01 of Research Group on Mathematical Linguistics, Rovira i Virgili University, Tarragona, Spain, 2001, 63-76 and Theor. Comp. Science, 301 (1-3), 201-215, May 2003.
  350. F. Fontana, G. Franco, Finding the Maximum Element Using P Systems, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 152-163, and Journal of Universal Computer Science, 10, 5, (2004), 567-580.
  351. F. Fontana, V. Manca, Discrete Solution of Differential Equations by P Metabolic Algorithm, Vol. II of Proc. of the Fourth Brainstorming Week on Membrane Computing, 31-40.
  352. G. Franco, Membrane Kauffman Networks, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 164-167.
  353. G. Franco, P.H. Guzzi, V. Manca, T. Mazza, Mitotic Oscillators as MP Graphs, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 344-356
  354. G. Franco, N. Jonoska, B. Osborn, A. Plaas, Modeling Knee Injuries by Membrane Systems, Sixth Workshop on Membrane Computing, WMC6, Vienna, Austria, 2005, and BioSystems, to appear.
  355. G. Franco, V. Manca, A membrane system for the leucocyte selective recruitment, A. Alhazov, C. Martín-Vide and Gh. Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 222-230.
  356. G. Franco, V. Manca, Modeling some Biological Phenomena by P Systems, EMCC Workshop, Vienna, November 2003.
  357. G. Franco, M. Margenstern, Computing by floating strings, Proc. MeCBIC 2006 (N. Busi, C. Zandron, eds.), Venice, 2006.
  358. F. Freund, R. Freund, M. Oswald, Splicing Test Tube Systems and Their Relation to Splicing Membrane Systems, Aspects of Molecular Computing, LNCS 2950, Springer, Berlin, 2004, 139-151.
  359. R. Freund, Asynchronous P Systems, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 12-28.
  360. R. Freund, Energy-controlled P systems, Pre-Proceedings of Second Workshop on Membrane Computing, Curtea de Arges, Romania, August 2002, 221-236, and in Gh. Paun, G. Rozenberg, A. Salomaa, C. Zandron, Eds., Membrane Computing. International Workshop, WMC-CdeA 2002, Curtea de Arges, Romania, August 2002, Springer-Verlag, LNCS 2597, Berlin, 2003, 247-260.
  361. R. Freund, Generalized P Systems, Fundamentals of Computation Theory, FCT'99, Iasi, 1999 (G. Ciobanu, Gh. Paun, eds.), LNCS 1684, Springer, 1999, 281-292.
  362. R. Freund, Generalized P Systems with Splicing and Cutting/Recombination, Workshop on Formal Languages, FCT99, Iasi, 1999, Grammars, 2, 3 (1999), 189-199.
  363. R. Freund, Particular Results for Variants of P Systems with One Catalyst in One Membrane, Vol. II of Proc. of the Fourth Brainstorming Week on Membrane Computing, 41-50.
  364. R. Freund, P systeme im sequentiellen Modus, Workshop Formale Methoden der Linguistik, and 14 Theorietag Automaten und Formale Sprachen, Potsdam, 2004, 57--61.
  365. R. Freund, P systems working in the sequential mode on arrays and strings, Developments in Language Theory (C.S. Calude, E. Calude, M.J. Dinneen, eds), LNCS 3340, Springer, Berlin, 2004, 188-199.
  366. R. Freund, Sequential P Systems, Theorietag 2000; Workshop on New Computing Paradigms (R. Freund, ed.), TU University Vienna, 2000, 177-183 and Romanian J. of Information Science and Technology, 4, 1-2 (2001), 77-88.
  367. R. Freund, Special variants of P systems inducing an infinite hiearchy with respect to the number of membranes, Bull. EATCS, 75 (Oct. 2001), 209-219.
  368. R. Freund, F. Freund, Molecular Computing with Generalized Homogeneous P Systems, Proc. Conf. DNA6 (A. Condon, G. Rozenberg, eds.), Leiden, 2000, 113-125.
  369. R. Freund, O.H. Ibarra, Gh. Paun, H.-C. Yen, Matrix languages, register machines, vector addition systems, Proceedings of the Third Brainstorming Week on Membrane Computing, Sevilla (Spain), January 31st - February 4th, 2005, 155-168
  370. R. Freund, M. Ionescu, M. Oswald, Extended spiking neural P systems with decaying spikes and/or total spiking, ACMC/FCT 2007 Workshop, Budapest.
  371. R. Freund, L. Kari, M. Oswald, P. Sosik, Computationally universal P systems without priorities: two catalysts are sufficient, Theoretical Computer Science, 330, 2(2005), 251-266.
  372. R. Freund, A. Leporati, M. Oswald, C. Zandron, Sequential P Systems with Unit Rules and Energy Assigned to Membranes, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 168-182.
  373. R. Freund, C. Martin-Vide, A. Obtulowicz, Gh. Paun, On three classes of automata-like P systems, Proc. DLT2003, LNCS 2710, Springer, Berlin, 2003, 292-303.
  374. R. Freund, C. Martin-Vide, Gh. Paun, From Regulated Rewriting to Computing with Membranes: Collapsing Hierarchies, Theoretical Computer Science, 312(2004), 143-188.
  375. R. Freund, M. Oswald, A Short Note on Analysing P Systems with Antiport Rules, Bull. EATCS, 78 (Oct. 2002), 231-236.
  376. R. Freund, M. Oswald, Complexity of P Automata with Catalysts, EMCC Workshop, Vienna, November 2003.
  377. R. Freund, M. Oswald, GP systems with Activated/Prohibited Membrane Channelsin Gh. Paun, G. Rozenberg, A. Salomaa, C. Zandron, Eds., Membrane Computing. International Workshop, WMC-CdeA 2002, Curtea de Arges, Romania, August 2002, Springer-Verlag, LNCS 2597, Berlin, 2003, 261-269.
  378. R. Freund, M. Oswald, GP systems with forbidding context, Fundamenta Informaticae, 49, 1-3 (2002), 81-102.
  379. R. Freund, M. Oswald, Modelling grammar systems by tissue P systems, Workshop on Grammar Systems, MTA SZTAKI, Budapest, 2004, 162--179.
  380. R. Freund, M. Oswald, P colonies and prescribed teams. Intern. J. Computer Math., 2006
  381. R. Freund, M. Oswald, P Colonies Working in the Maximally Parallel and in the Sequential Mode, in G. Ciobanu, Gh. Paun, Pre-Proc. of First International Workshop on Theory and Application of P Systems, Timisoara, Romania, September 26-27, 2005, 49-56
  382. R. Freund, M. Oswald, P systems with conditional communication rules assigned to membranes, A. Alhazov, C. Martín-Vide and Gh. Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 231-240.
  383. R. Freund, M. Oswald, P Systems with Antiport Rules for Evolution Rules, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 183-192.
  384. R. Freund, M. Oswald, P systems with dynamic channels transporting membrane vesicles, Tenth Int. Symp. on Artificial Life and Robotics, Beppu, Japan, 2005.
  385. R. Freund, M. Oswald, P Systems with Elementary Graph Productions, Rovira i Virgili Univ., Tech. Rep. No. 26, M. Cavaliere, C. Martín-Vide, Gh. Paun (Eds), Brainstorming Week on Membrane Computing; Tarragona, Feb 5-11 2003, 180-188 and New Generation Computing, 22(4), 265-375, Aug. 2004.
  386. R. Freund, M. Oswald, Small Universal Antiport P Systems and Universal Multiset Grammars, Vol. II of Proc. of the Fourth Brainstorming Week on Membrane Computing, 51-64.
  387. R. Freund, M. Oswald, Spiking neural P systems with inhibitory axons. In: M. Sugisaka, H. Tanaka (eds.), Proceedings of the 12th Int. Symposium on Artificial Life and Robotics, Jan 25-27, 2007, Beppu, Oita, Japan, 509-512
  388. R. Freund, M. Oswald, Tissue P systems with mate and drip operations, Proc. MeCBIC 2006 (N. Busi, C. Zandron, eds.), Venice, 2006.
  389. R. Freund, M. Oswald, Tissue P systems with symport/antiport rules of one symbol are computationally universal, Proceedings of the ESF Exploratory Workshop on Cellular Computing (Complexity Aspects), Sevilla (Spain), January 31st - February 2nd, 2005, 187-200
  390. R. Freund, M. Oswald, Variants of GP Systems, Pre-Proceedings of Workshop on Membrane Computing, Curtea de Arges, Romania, August 2001, Technical Report 17/01 of Research Group on Mathematical Linguistics, Rovira i Virgili University, Tarragona, Spain, 2001, 77-88.
  391. R. Freund, M. Oswald, F. Freund, M. Margenstern, S. Verlan, Y. Rogozhin, P systems with cutting/recombination rules assigned to membranes, A. Alhazov, C. Martín-Vide and Gh. Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 241-251
  392. R. Freund, M. Oswald, A. Paun, P Systems Generating Trees, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 221-232.
  393. R. Freund, M. Oswald, T. Schirk, How a membrane agent buys goods in a membrane store, Pre-proc. of Int. Conf. on Bio-Inspired Computing - Theory and Applications, BIC-TA 2006, Membrane Computing Section, Wuhan, China, Sept. 2006, 93-102
  394. R. Freund, M. Oswald, L. Staiger, Omega-P automata with communication rules, A. Alhazov, C. Martín-Vide and Gh. Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 252-265
  395. R. Freund, A. Paun, Membrane Systems with Symport/Antiport: Universality Results, in Gh. Paun, G. Rozenberg, A. Salomaa, C. Zandron, Eds., Membrane Computing. International Workshop, WMC-CdeA 2002, Curtea de Arges, Romania, August 2002, Springer-Verlag, LNCS 2597, Berlin, 2003, 270-287.
  396. R. Freund, A. Paun, P Systems with Active Membranes and without Polarizations, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 193-205, and Soft Computing, 9(9), Sep. 2005, 657-663
  397. R. Freund, Gh. Paun, On Deterministic P Systems, manuscript, 2003.
  398. R. Freund, Gh. Paun, M.J. Perez-Jimenez, Polarizationless P Systems with Active Membranes Working in the Minimally Parallel Manner, in Proceedings of the Fifth Brainstorming Week on Membrane Computing, M.A. Gutierrez-Naranjo, Gh. Paun, A. Romero-Jimenez, A. Riscos-Nunez, (eds.), Sevilla (Spain), January 29th - February 2, 2007, 131-156
  399. R. Freund, Gh. Paun, M.J. Perez-Jimenez, Tissue-like P Systems with Channel-States, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 206-223, and Theoretical Computer Science, 330, 1 (2005), 101-116.
  400. R. Freund, Gh. Paun, G. Rozenberg, A. Salomaa, eds., Membrane Computing, International Workshop, WMC6, Vienna, Austria, 2005, Selected and Invited Papers, LNCS 3850, Springer-Verlag, Berlin, 2006
  401. R. Freund, S. Verlan, A formal framework for P systems, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 317-330
  402. P. Frisco, About P Systems with Symport/Antiport, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 224-236, and Soft Computing, 9(9), Sep. 2005, 664-672
  403. P. Frisco, Conformon-P systems with negative values, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007,  331-344
  404. P. Frisco, From molecular computing to modelling with conformons and computing by observation, Ramanujan Math. Soc. Lecture Notes Series, 3 (2007),85--101.
  405. P. Frisco, Infinite Hierarchies of Conformon-P Systems, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 357-371
  406. P. Frisco, Membrane Computing Based on Splicing: Improvements, Pre-proc. Workshop on Multiset Processing, Curtea de Arges, Romania, CDMTCS TR 140, Univ. of Auckland, 2000, 100-111.
  407. P. Frisco, On Two Variants of Splicing P Systems, Romanian J. of Information Science and Technology, 4, 1-2 (2001), 89-100.
  408. P. Frisco, P Systems, Petri Nets and Program Machine, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005, 336-354
  409. P. Frisco, The Conformon-P System: A Molecular and Cell Biology-Inspired Computability Model, Theoretical Computer Science, 312(2-3), 30 January 2004, pp. 295-319.
  410. P. Frisco. Theory of Molecular Computing. Splicing and Membrane Systems, PhD Thesis, Leiden University, The Netherlands, 2004.
  411. P. Frisco, D.W. Corne, Advances in modeling the dynamics of HIV infection with conformon-P systems, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 21-32
  412. P. Frisco, D. W. Corne, Dynamics of HIV infection studied with Cellular Automata and Conformon-P systems, submitted.
  413. P. Frisco, D. W. Corne, Dynamics of HIV infection studied with Conformon-P systems, The Seventh International Conference on Systems Biology, October 9-13, 2006, Yokohama, Japan.
  414. P. Frisco, R. Gibson, A Simulator and an Evolution Program for Conformon-P Systems, in G. Ciobanu, Gh. Paun, Pre-Proc. of First International Workshop on Theory and Application of P Systems, Timisoara, Romania, September 26-27, 2005, 57-60
  415. P. Frisco, R.T. Gibson, A Simulator for Conformon P Systems, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005, 355-372
  416. P. Frisco, H. J. Hoogeboom, P systems with symport/antiport simulating counter automata, Acta Informatica, 41, 2-3, December 2004, pp. 145-170
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  418. P. Frisco, H.J. Hoogeboom, P. Sant, A Direct Construction of a Universal P System, Pre-Proceedings of Workshop on Membrane Computing, Curtea de Arges, Romania, August 2001, Technical Report 17/01 of Research Group on Mathematical Linguistics, Rovira i Virgili University, Tarragona, Spain, 2001, 89-106 and Fundamenta Informaticae, 49, 1-3 (2002), 103-122.
  419. P. Frisco, S. Ji, Conformons--P Systems, DNA Computing, Proceedings of 8th International Workshop on DNA-Based Computers, DNA 8, Sapporo, Japan, June 2002, Lecture Notes in Computer Science 2568, Springer (2002), 291-301.
  420. P. Frisco, S. Ji, Info-energy P systems, Proc. DNA 8 conference, Hokkaido University, Sapporo, Japan, June 2002, (M. Hagiya, A. Obuchi, eds), 161-170.
  421. P. Frisco, S. Ji, Towards a hierarchy of info-energy P systems, Pre-Proceedings of Second Workshop on Membrane Computing, Curtea de Arges, Romania, August 2002, 249-264, and in Gh. Paun, G. Rozenberg, A. Salomaa, C. Zandron, Eds., Membrane Computing. International Workshop, WMC-CdeA 2002, Curtea de Arges, Romania, August 2002, Springer-Verlag, LNCS 2597, Berlin, 2003, 302-318.
  422. C. Fu, Z. Qi, J.You, Encoding P Systems in Non-interleaving "\Pi"-Calculus, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 233-244.
  423. Y. Gao, H.J. Hoogeboom, P systems with single passenger carriers, Intern. J. Found. Computer Sci., 18, 6 (2007), 1227--1235.
  424. M. Garcıa-Arnau, D. Perez, A. Rodrıguez-Paton, P. Sosik, Spiking Neural P Systems: Stronger Normal Forms, in Proceedings of the Fifth Brainstorming Week on Membrane Computing, M.A. Gutierrez-Naranjo, Gh. Paun, A. Romero-Jimenez, A. Riscos-Nunez, (eds.), Sevilla (Spain), January 29th - February 2, 2007, 157-178
  425. D. Genova, Models in membrane computing, Joint Annual Meeting MAA Florida Section and FTYCMA, Univ. of Central Florida, February, 2004.
  426. H. Georgescu, An efficient way to model P systems by X machine systems, Studia Univ. Babes-Bolyai, Informatica, 46, 1 (2001), 3--17
  427. A. Georgiou, M. Gheorghe, Generative devices used in graphics, Artiom Alhazov, Carlos Martín-Vide and Gheorghe Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 266-272
  428. M. Gheorghe, P systems: A modelling language, Pre-Proc. Unconventional Programming Paradigms, UPP04, Le Mont Saint-Michel, September 2004, 23--27.
  429. M. Gheorghe, P systems - A new computational approach in systems biology, Pre-proc. of Int. Conf. on Bio-Inspired Computing - Theory and Applications, BIC-TA 2006, Membrane Computing Section, Wuhan, China, Sept. 2006, 7-14
  430. M. Gheorghe, M. Holcombe, P. Kefalas, Eilenberg P systems: a bio-computational model, Proc. First Balkan Conf. on Informatics, Thessaloniki, Greece, 2003, 147-160.
  431. M. Gheorghe, M. Holcombe, P. Kefalas, Computational models of collective foraging, Proc. Fourth Intern. Workshop on Information Processing in IPCAT 2001,  Cells and Tissues, Brussels, August 2001, Biosystems, 61(2001), 133-141.
  432. M. Gheorghe, N. Krasnogor, Gh. Paun, G. Rozenberg, Membrane computing model for tiles self-assembly, First Intern. Symp. on Cellular Computing, Warwick, December 2004.
  433. M. Gheorghe, C. Martin-Vide, V. Mitrana, M. Perez-Jimenez, An agent based approach of collective foraging, Proc. Conf. on Computational Methods in Neural Modeling, LNCS 2686 (J. Mira, J.R. Alvarez, eds.), Springer, 2003, 639--645.
  434. M. Gheorghe, Gh. Paun, Computing by self-assembly: DNA molecules, polyominoes, cells, submitted, 2005
  435. J.-L. Giavitto, O. Michel, Accretive rules in Cayley P systems, Pre-Proceedings of Second Workshop on Membrane Computing, Curtea de Arges, Romania, August 2002, 265-282, and in Gh. Paun, G. Rozenberg, A. Salomaa, C. Zandron, Eds., Membrane Computing. International Workshop, WMC-CdeA 2002, Curtea de Arges, Romania, August 2002, Springer-Verlag, LNCS 2597, Berlin, 2003, 319-338.
  436. J.-L. Giavitto, O. Michel, MGS: Implementing a Unified View on Four Biologically Inspired Computing Models, Pre-Proceedings of Workshop on Membrane Computing, Curtea de Arges, Romania, August 2001, Technical Report 17/01 of Research Group on Mathematical Linguistics, Rovira i Virgili University, Tarragona, Spain, 2001, 107-122.
  437. J.-L. Giavitto, O. Michel, The topological structures of membrane computing, Fundamenta Informaticae, 49, 1-3 (2002), 123-145.
  438. M. Gontineac, Mealy membrane automata: an automata-like approach to membrane computing, Proc. of ICCCC 2006, Oradea, Romania, June 2006, 222--227.
  439. C. Graciani-Dıaz, M.A. Gutierrez-Naranjo, M.J. Perez-Jimenez, A Membrane Computing Model for Ballistic Depositions, in Proceedings of the Fifth Brainstorming Week on Membrane Computing, M.A. Gutierrez-Naranjo, Gh. Paun, A. Romero-Jimenez, A. Riscos-Nunez, (eds.), Sevilla (Spain), January 29th - February 2, 2007, 179-198
  440. C. Graciani Dıaz, Gh. Paun, A. Romero-Jimenez, F. Sancho-Caparrini, eds., Proceedings of the Fourth Brainstorming Week on Membrane Computing, Sevilla, Spain, Jan 30–Feb 3, 2006
  441. C. Graciani, A. Riscos-Nunez, Looking for simple common schemes to design recognizer P systems with active membranes that solve numerical decision problems, Proc. UC05, LNCS 3699, Springer, 2005, 94-104.
  442. R. Gramatovici, G. Bel-Enguix, Parsing with P Automata, in G. Ciobanu, Gh. Paun, M.J. Perez-Jimenez, eds., Applications of Membrane Computing, Springer-Verlag, Berlin, 2005, 389--412.
  443. A. Gutierrez, L. Fernandez, F. Arroyo, G. Bravo, Optimizing membrane system implementation with multisets and evolution rules compression, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 345- 362
  444. M.A. Gutiérrez-Naranjo, A. Leporati, C. Zandron, Converting integer numbers from binary to unary notation with P, Proceedings of the ESF Exploratory Workshop on Cellular Computing (Complexity Aspects), Sevilla (Spain), January 31st - February 2nd, 2005 systems, 201-208
  445. M.A. Gutierrez-Naranjo, Gh. Paun, A. Riscos-Nunez, F.J. Romero-Campero, eds., Proceedings of the Fourth Brainstorming Week on Membrane Computing, Volume I, Sevilla, Spain, Jan 30–Feb 3, 2006
  446. M.A. Gutierrez-Naranjo, Gh. Paun, A. Romero-Jimenez, A. Riscos-Nunez, eds. Proceedings of the Fifth Brainstorming Week on Membrane Computing, Sevilla (Spain), January 29th - February 2, 2007
  447. M.A. Gutierrez-Naranjo, M.J. Perez-Jimenez, Fractals and P Systems, Vol. II of Proc. of the Fourth Brainstorming Week on Membrane Computing, 65-86.
  448. M. Gutierrez-Naranjo, M.J. Perez-Jimenez, P systems with active membranes, without polarizations and without dissolution: a characterization of P, Proc. UC05, LNCS 3699, Springer, 2005, 105-116.
  449. M.A. Gutiérrez-Naranjo, M.J. Pérez-Jiménez, P systems with membrane creation and rule input, Proceedings of the ESF Exploratory Workshop on Cellular Computing (Complexity Aspects), Sevilla (Spain), January 31st - February 2nd, 2005, 209-224
  450. M.A. Gutierrez-Naranjo, M.J. Perez-Jimenez, A. Riscos-Nunez, A fast P system for finding a balanced 2-partition, Soft Computing, 9(9), Sep. 2005, 673-678
  451. M.A. Gutiérrez-Naranjo, M.J. Pérez-Jiménez, A. Riscos-Núñez, A simulator for confluent P systems, Proceedings of the Third Brainstorming Week on Membrane Computing, Sevilla (Spain), January 31st - February 4th, 2005, 169-184
  452. M.A. Gutierrez-Naranjo, M.J. Perez-Jimenez, A. Riscos-Nunez, An Approach to the Degree of Parallelism in P Systems, Vol. II of Proc. of the Fourth Brainstorming Week on Membrane Computing, 87-104.
  453. M.A. Gutierrez-Naranjo, M.J. Perez-Jimenez, A. Riscos-Nunez, An Efficient Cellular Solution for the Partition Problem, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 237-246.
  454. M.A. Gutierrez-Naranjo, M.J. Perez-Jimenez, A. Riscos-Nunez, Available Membrane Computing Software, in G. Ciobanu, Gh. Paun, M.J. Perez-Jimenez, eds., Applications of Membrane Computing, Springer-Verlag, Berlin, 2005, 411--438.
  455. M.A. Gutiérrez-Naranjo, M.J. Pérez-Jiménez, A. Riscos-Núñez, Multidimensional Sevilla carpets associated with P systems, Proceedings of the ESF Exploratory Workshop on Cellular Computing (Complexity Aspects), Sevilla (Spain), January 31st - February 2nd, 2005, 225-236
  456. M.A. Gutierrez Naranjo, M.J. Perez-Jimenez, A. Riscos-Nunez, On Descriptive Complexity of P Systems, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 245-255.
  457. M.A. Gutierrez Naranjo, M.J. Perez-Jimenez, A. Riscos-Nunez, Solving Numerical NP-Complete Problems Using P Systems with Active membranes: the Partition Problem and Beyond, EMCC Workshop, Vienna, November 2003.
  458. M.A. Gutierrez-Naranjo, M.J. Perez-Jimenez, A. Riscos-Nunez, Towards a Programming Language in Cellular Computing, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 247-257.
  459. M.A. Gutierrez-Naranjo, M.J. Perez-Jimenez, A. Riscos-Nunez, F.J. Romero-Campero, A membrane computing view on tumours, Pre-proc. of Int. Conf. on Bio-Inspired Computing - Theory and Applications, BIC-TA 2006, Membrane  Computing Section, Wuhan, China, Sept. 2006, 103-112
  460. A. Gutierrez-Naranjo, M. J. Perez-Jimenez, A. Riscos-Nunez, F. J. Romero-Campero, Characterizing Tractability with Membrane Creation, in G. Ciobanu, Gh. Paun, Pre-Proc. of First International Workshop on Theory and Application of P Systems, Timisoara, Romania, September 26-27, 2005, 61-68
  461. M.A. Gutierrez-Naranjo, M.J. Perez-Jimenez, A. Riscos-Nunez, F.J. Romero-Campero, On the efficiency of cell-like and tissue-like recognizer membrane systems, Proc. NICSO, 2006
  462. M.A. Gutierrez Naranjo, M.J. Perez Jimenez, A. Riscos Nunez, F.J. Romero Campero, On the Power of Dissolution in P Systems with Active Membranes, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005, 373-394
  463. M.A. Gutierrez-Naranjo, M.J. Perez-Jimenez, A. Riscos-Nunez, F.J. Romero-Campero, A. Romero-Jimenez, Characterizing tractability by cell-like membrane systems. In Formal Models, Languages and Applications (K.G. Subramanian, K. Rangarajan, M. Mukund, eds.), World Scientific, Singapore, 2006.
  464. M.A. Gutierrez Naranjo, M.J. Perez Jimenez, F.J. Romero Campero, A Linear Solution for QSAT with Membrane Creation, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005, 395-409
  465. M.A. Guttierez-Naranjo, M.J. Perez-Jimenez, F.J. Romero-Campero, A linear solution of subset sum problem by using membrane creation, IWINAC 2005, La Palma de Gran Canaria, LNCS 3561, (J. Mira, J.R. Alvarez, eds.), Springer, 2005, 258--267.
  466. M.A. Gutiérrez-Naranjo, M.J. Pérez-Jiménez, F.J. Romero-Campero, Simulating avascular tumors with membrane systems, Proceedings of the Third Brainstorming Week on Membrane Computing, Sevilla (Spain), January 31st - February 4th, 2005, 185-196
  467. M.A. Gutierrez-Naranjo, M. Perez-Jimenez, F.J. Romero-Campero,  A uniform solution to SAT using membrane creation, CiE2005: New Computational Paradigms, Amsterdam, 2005, and Theoretical Computer Science, to appear.
  468. M.A. Gutierrez-Naranjo, V. Rogozhin, Deductive Databases and P Systems, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 258-263.
  469. E. Gutuleac, Descriptive times membrane Petri nets for modelling of parallel computing, Proc. of ICCCC 2006, Oradea, Romania, June 2006, 256--261.
  470. T. Head, Aqueous Simulations of Membrane Computations, http://psystems.disco.unimib.it
  471. S. Hemalatha, A Study on Rewriting P Systems, Splicing Grammar Systems and Picture Array Languages, PhD, thesis, University of Chennai, India, 2007
  472. D. Hemalatha, K.S. Dersanambika, K.G. Subramanian, C. Sri Hari Nagore, Array-rewriting P systems with conditional communication, Ramanujan Math. Soc. Lecture Notes Series, 3 (2007), 155--160.
  473. S.Hemalatha, K.S.Dersanambika, K.G.Subramanian, C. Sri Hari Nagore, P Systems Generating 3D Rectangular Picture Languages, in G. Ciobanu, Gh. Paun, Pre-Proc. of First International Workshop on Theory and Application of P Systems, Timisoara, Romania, September 26-27, 2005, 69-74
  474. T. Hinze, S. Hayat, T. Lenser, N. Matsumaru, P. Dittrich, Hill kinetics meets P systems: A case study on gene regulatory networks as computing agents in silico and in vivo, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 363-382
  475. T. Hinze, T. Lenser, P. Dittrich, A Protein Substructure Based P System for Description and Analysis of Cell Signalling Networks, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 372-286
  476. M. Holcombe, L. Holcombe, M. Gheorghe, N. Talbot, A hybrid machine model of rice blast fungus Magnaporthe grisea, Proc. Fourth Intern. Workshop on Information Processing in IPCAT 2001,  Cells and Tissues, Brussels, August 2001.
  477. H. J. Hoogeboom, Carriers and counters. P systems with carriers vs. (blind) counter automata, In: Developments in Language Theory, DLT 2002, revised papers (M. Ito, M. Toyama, eds.), Lecture Notes in Computer Science, v. 2450, 140-151, 2003.
  478. H.J. Hoogeboom, Gh. Paun, G. Rozenberg, Pre-proceedings of Membrane Computing, International Workshop, WMC7,
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  479. L. Huang, X.-X. He, N. Wang, Y. Xie, P systems based multi-objective optimization algorithm, Pre-proc. of Int. Conf. on Bio-Inspired Computing - Theory and Applications, BIC-TA 2006, Membrane Computing Section, Wuhan, China, Sept. 2006, 113-123
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  481. O.H. Ibarra, On Determinism Versus Nondeterminism in P Systems, Th. Computer Sci., 344(2005), 120-133.
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  483. O.H. Ibarra, On the computational complexity of membrane computing systems, Th. Computer Sci., 320 (1), 89-109, june 2004.
  484. O.H. Ibarra, P Systems: Some recent results and research problems, Pre-Proc. Unconventional Programming Paradigms, UPP04, Le Mont Saint-Michel, September 2004, 47--54.
  485. O.H. Ibarra, Some Recent Results Concerning Deterministic P Systems, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005, 24-25
  486. O.H. Ibarra, The number of membranes matters, A. Alhazov, C. Martín-Vide and Gh. Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 273-285.
  487. O.H. Ibarra, Z. Dang, O. Egecioglu, Catalytic membrane systems, semilinear sets, and vector addition systems, Theoretical Computer Sci., 312, 2-3 (2004), 378--400.
  488. O.H. Ibarra, Z. Dang, O. Egecioglu, G. Saxena, Characterizations of catalytic membrane computing systems, Proc. MFCS 2003, LNCS 2747, Springer, 2003, 480-489.
  489. O.H. Ibarra, A. Paun, Counting time in computing with cells, DNA11, London, Ontario, Canada, 2005
  490. O.H. Ibarra, A. Paun, Gh. Paun,A. Rodrıguez-Paton, P. Sosik, S. Woodworth, Normal Forms for Spiking Neural P Systems, Vol. II of Proc. of the Fourth Brainstorming Week on Membrane Computing, 105- 136.
  491. O.H. Ibarra, Gh. Paun, Characterizations of context-sensitive languages and other language classes in terms of symport/antiport P systems, submitted, 2005.
  492. O.H. Ibarra, Gh. Paun, Membrane Computing: A General View, Annals of European Academy of Sciences, in press.
  493. O.H. Ibarra, S. Woodworth, Characterizations of Some Restricted Spiking Neural P Systems, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 387-396
  494. O.H. Ibarra, S. Woodworth, Characterizing regular languages by spiking neural P systems, Intern. J. Found. Computer Sci., 18, 6 (2007), 1247--1256.
  495. O.H. Ibarra, S. Woodworth, On bounded symport/antiport P systems, DNA11, London, Ontario, Canada, 2005
  496. O. Ibarra, S. Woodworth, On Symport/Antiport P Systems with One or Two Symbols, in G. Ciobanu, Gh. Paun, Pre-Proc. of First International Workshop on Theory and Application of P Systems, Timisoara, Romania, September 26-27, 2005, 75-82
  497. O.H. Ibarra, H.-C. Yen, On deterministic catalytic P systems, CIAA05, LNCS 3845, Springer, 2006, 164-176.
  498. O.H. Ibarra, H.-C. Yen, Z. Dang, The power of maximal parallelism in P systems, Developments in Language Theory, (C.S. Calude, E. Calude, M.J. Dinneen, eds), LNCS 3340, Springer, Berlin, 2004, 212-224.
  499. J. Inouye, Fibonacci sequence generation using membrane computing, The 2004 Intern. Multiconference in Computer Science and Computer Engineering, Las Vegas, 2004, 384--389
  500. J. Inouye, Quantum simulation using membrane computing, The 2004 Intern. Multiconference in Computer Science and Computer Engineering, Las Vegas, 2004, 403--409
  501. J. Inouye, P.P. Dey, Membranous Filter Sort, in WSEA Transactions on Biology and Medicine, Issue 4, Vol. 1, October 2004 (ISSN: 1109-9518).
  502. M. Ionescu, T.O. Ishdorj, Boolean Circuits and a DNA Algorithm in Membrane Computing, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005, 410-438
  503. M. Ionescu, C. Martin-Vide, Gh. Paun, P systems with symport/antiport rules: The traces of objects, Pre-Proceedings of Second Workshop on Membrane Computing, Curtea de Arges, Romania, August 2002, 283-296, and Grammars, 5(2002), 65-79.
  504. M. Ionescu, C. Martin-Vide, A. Paun, Gh. Paun, Membrane Systems with Symport/Antiport. (Unexpected) Universality Results, Proc. DNA8, Sapporo, Japan, 2002, 151-160.
  505. M. Ionescu, C. Martin-Vide, A. Paun, Gh. Paun, Unexpected universality results for three classes of P systems with symport/antiport, Natural Computing, 2, 4 (2003), 337--348.
  506. M. Ionescu, A. Paun, Gh. Paun, M.J. Perez-Jimenez, Computing with spiking neural P systems: Traces and small universal systems, Proc. DNA12 (C. Mao, Y. Yokomori, B.-T. Zhang, eds.), Seul, June 2006, 32-42.
  507. M. Ionescu, Gh. Paun, T. Yokomori, Spiking neural P systems with an exhaustive use of rules, Intern. J. Unconventional Computing, 3, 2 (2007), 135--154.
  508. M. Ionescu, D. Sburlan, On P Systems with Promoters/Inhibitors, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 264-280, and Journal of Universal Computer Science, 10, 5, (2004), 581-599.
  509. M. Ionescu, D. Sburlan, P Systems with Adjoining Controlled Communication Rules, in Proceedings of the Fifth Brainstorming Week on Membrane Computing, M.A. Gutierrez-Naranjo, Gh. Paun, A. Romero-Jimenez, A. Riscos-Nunez, (eds.), Sevilla (Spain), January 29th - February 2, 2007, 199-212
  510. M. Ionescu, D. Sburlan, Several Applications of Spiking Neural P Systems, in Proceedings of the Fifth Brainstorming Week on Membrane Computing, M.A. Gutierrez-Naranjo, Gh. Paun, A. Romero-Jimenez, A. Riscos-Nunez, (eds.), Sevilla (Spain), January 29th - February 2, 2007, 213-226
  511. M. Ionescu, D. Sburlan, Some applications of spiking neural P systems, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 383-394
  512. T. O. Ishdorj, Membrane Computing, Neural Inspiration, Gene Assembly in Ciliates, Phd Thesis, Universidad de Sevilla, Spain, 2007
  513. T.-O. Ishdorj, Minimal parallelism for polarizationless P systems, submitted 2006
  514. T.-O. Ishdorj, M. Ionescu, Replicative-distribution rules in P systems with active membranes, Proc. ICTAC 2004, Guiyang, China, 2004, LNCS 3407, Springer, 2005, 68-83.
  515. M. Ito, C. Martin-Vide, Gh. Paun, A Characterization of Parikh Sets of ET0L Languages in Terms of P Systems, in Words, Semigroups, and Transducers (M. Ito, Gh. Paun, S. Yu, eds.), World Scientific, Singapore, 2001, 239-254.
  516. S. Ji, The Bhopalator: An Information/Energy Dual Model of the Living Cell, Pre-Proceedings of Workshop on Membrane Computing, Curtea de Arges, Romania, August 2001, Technical Report 17/01 of Research Group on Mathematical Linguistics, Rovira i Virgili University, Tarragona, Spain, 2001, 123-142 and  Fundamenta Informaticae, 49, 1-3 (2002), 147-165.
  517. S. Ji, Towards a Unified Theory of Computing, Mind, and Signs, Rovira i Virgili Univ., Tech. Rep. No. 26, M. Cavaliere, C. Martín-Vide, Gh. Paun (Eds), Brainstorming Week on Membrane Computing; Tarragona, Feb 5-11 2003, 189-197.
  518. N. Jonoska, M. Margenstern, Tree operations in P systems and lambda-calculus, Fundamenta Informaticae, 59, 1(2004), 67-90.
  519. P. Kefalas, G. Eleftherakis, M. Holcombe, M. Gheorghe, Simulation and verification of P systems through communicating X-machines, BioSystems, 70, 2(2003), 135-148.
  520. P. Kefalas, I. Stamatopoulou, M. Gheorghe, Principles of transforming communicating X-machines to population P systems, ACMC/FCT 2007 Workshop, Budapest.
  521. J. Kelemen, Plain talk about  language-theoretic models of multi-agent systems, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 395-404
  522. J. Kelemen, A. Kelemenova, Gh. Paun, P colonies, Workshop on Artificial Chemistry (M. Bedan et al, eds), ALIFE9, Boston, USA, 2004, 82-86.
  523. C. Kevorchian, An algebraic topology approach of membrane computing, Proc. AIDC'2003, Craiova, Romania.
  524. J. Kleijn, M. Koutny, Synchrony and Asynchrony in Membrane Systems, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 21-39
  525. J. Kleijn, M. Koutny, G. Rozenberg, Process semantics for membrane systems. Submitted, 2006
  526. J. Kleijn, M. Koutny, G. Rozenberg, Towards a Petri Net Semantics for Membrane Systems, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005, 439-460
  527. W. Korczynski, On a model of economic systems, Proc. Second Conf. Tools and Methods of Data Transformation, WSU Kielce, 2004.
  528. W. Korczynski, P systems as a tool to deal with concurrency in accounting, submitted, 2004.
  529. W. Korczynski, Paun's Systems and Accounting, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005, 461-464
  530. W. Korczynski, Paun's systems as models of economic systems, Pre-proc. of Int. Conf. on Bio-Inspired Computing - Theory and Applications, BIC-TA 2006, Membrane Computing Section, Wuhan, China, Sept. 2006, 124-130
  531. W. Korczynski, Transformacje systemow Pauna jako model przeksztalcen systemowych, Raport z Badan Grantu W2/2003, WSU Kielce, 2004.
  532. W. Korczynski, G. Wawrzola, S. Wawrzola, On a reconstruction problem for membrane systems, Proc. Second Conf. Tools and Methods of Data Transformation, WSU Kielce, 2004.
  533. S.N. Krishna, Combining brane calculus and membrane computing, Pre-proc. of Int. Conf. on Bio-Inspired Computing - Theory and Applications, BIC-TA 2006, Membrane Computing Section, Wuhan, China, Sept. 2006, 131-143
  534. S. N. Krishna, Computing with Simple P Systems, Pre-proc. Workshop on Multiset Processing, Curtea de Arges, Romania, CDMTCS TR 140, Univ. of Auckland, 2000, 124-137.
  535. S.N. Krishna, Infinite hierarchies on some variants of P systems, manuscript, 2002.
  536. S.N. Krishna, On the efficiency of a variant of P systems with mobile membranes, Proceedings of the ESF Exploratory Workshop on Cellular Computing (Complexity Aspects), Sevilla (Spain), January 31st - February 2nd, 2005, 237-246 and Ramanujan Math. Soc. Lecture Notes Series, 3 (2007), 171--178.
  537. S.N. Krishna, On the power of tissue P systems working in the minimal mode, Unconventional Models of Computation, LNCS 2509, Springer, Berlin, 2002, 176-190.
  538. S.N. Krishna, P systems with symport/antiport: The traces of RBCs, Membrane Computing. International Workshop WMC5, Milano, Italy, 2004, LNCS 3365, Springer, 2005, 331-343.
  539. S.N. Krishna, The power of mobility: four membranes suffice, CiE2005: New Computational Paradigms, Amsterdam, 2005, LNCS 3526, Springer, 2005, 242-251.
  540. S.N. Krishna, Universality with RBC-like objects, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 256-267.
  541. S.N. Krishna, Universality results for a brane calculus, Theoretical Computer Sci., 2006
  542. S. N. Krishna, Languages of P Systems. Computability and Complexity, PhD Thesis, IIT Madras, 2001.
  543. S. N. Krishna, K. Krithivasan, R. Rama, P Systems with Picture Objects, Acta Cybernetica, 15, 1(2001), 53-74.
  544. S.N. Krishna, K. Lakshmanan, R. Rama, Hybrid P Systems, Romamnian J. of Information Science and Technology, 4, 1-2 (2001), 111-124.
  545. S.N. Krishna, K. Lakshmanan, R. Rama, On the Power of P Systems with Contextual Rules, Pre-Proceedings of Workshop on Membrane Computing, Curtea de Arges, Romania, August 2001, Technical Report 17/01 of Research Group on Mathematical Linguistics, Rovira i Virgili University, Tarragona, Spain, 2001, 143-156 and Fundamenta Informaticae, 49, 1-3 (2002), 167-178.
  546. S.N. Krishna, K. Lakshmanan, R. Rama, Tissue P systems with contextual and rewriting rules, Pre-Proceedings of Second Workshop on Membrane Computing, Curtea de Arges, Romania, August 2002, 297-310, and in Gh. Paun, G. Rozenberg, A. Salomaa, C. Zandron, Eds., Membrane Computing. International Workshop, WMC-CdeA 2002, Curtea de Arges, Romania, August 2002, Springer-Verlag, LNCS 2597, Berlin, 2003, 339-351.
  547. S.N. Krishna, A. Paun, Some Universality Results on Evolution-Communication P Systems, Rovira i Virgili Univ., Tech. Rep. No. 26, M. Cavaliere, C. Martín-Vide, Gh. Paun (Eds), Brainstorming Week on Membrane Computing; Tarragona, Feb 5-11 2003, 207-215 and New Generation Computing, 22 (4), 377-394, Aug. 2004
  548. S.N. Krishna, A. Paun, Three Universality Results on P Systems, Rovira i Virgili Univ., Tech. Rep. No. 26, M. Cavaliere, C. Martín-Vide, Gh. Paun (Eds), Brainstorming Week on Membrane Computing; Tarragona, Feb 5-11 2003, 198-206.
  549. S.N. Krishna, Gh. Paun, P systems with mobile membranes, Natural Computing, 4, 3(2005), 255-274.
  550. S. N. Krishna, R. Rama, A Note on Parallel Rewriting in P Systems, Bulletin of the EATCS, 73 (February 2001), 147-151.
  551. S. N. Krishna, R. Rama, A Variant of P Systems with Active Membranes: Solving NP-Complete Problems, Romanian J. of Information Science and Technology, 2, 4 (1999), 357-367.
  552. S. N. Krishna, R. Rama, Breaking DES Using P Systems, Theoretical Computer Sci., 299, 1-3(2003), 495-508.
  553. S.N. Krishna, R. Rama, An infinite hierarchy for some variants of P systems, Ramanujan Math. Soc. Lecture Notes Series, 3 (2007), 179--185.
  554. S.N. Krishna, R. Rama, Insertion-Deletion P Systems, Proc. 7th Intern. Meeting on DNA Based Computers (N. Jonoska, N.C. Seeman, eds.), Tampa, Florida, USA, 2001, 350-359
  555. S. N. Krishna, R. Rama, On the Power of P Systems Based on Sequential/Parallel Rewriting, Intern. J. Computer Math., 77, 1-2 (2000), 1-14.
  556. S. N. Krishna, R. Rama, On Simple P Systems with External Output, submitted, 2000.
  557. S.N. Krishna, R. Rama, P Systems with Replicated Rewriting, J. Automata, Languages, and Combinatorics, 6, 3 (2001), 345-350.
  558. S.N. Krishna, R. Rama, Time-Varying and Null Parallel P Systems, manuscript, 2001.
  559. S.N. Krishna, R. Rama, Towards reducing parallelism in P systems. In Formal Models, Languages and Applications (K.G. Subramanian, K. Rangarajan, M. Mukund, eds.), World Scientific, Singapore, 2006.
  560. S.N. Krishna, R. Rama, H. Ramesh, Further results on contextual/rewriting P systems, Fundamenta Informaticae, 64, 1-4 (2005).
  561. K. Krithivasan, A glimpse of membrane computing, Ramanujan Math. Soc. Lecture Notes Series, 3 (2007), 49--61.
  562. K. Krithivasan, P Automata with Tapes, Rovira i Virgili Univ., Tech. Rep. No. 26, M. Cavaliere, C. Martín-Vide, Gh. Paun (Eds), Brainstorming Week on Membrane Computing; Tarragona, Feb 5-11 2003, 216-225.
  563. K. Krithivasan, S.V. Varma, On minimising finite state P automata, Bull. EATCS, 80 (July 2003), 168-173.
  564. M. Kudlek, C. Martin-Vide, Gh. Paun, Toward FMT (Formal Macroset Theory), Pre-proc. Workshop on Multiset Processing, Curtea de Arges, Romania, CDMTCS TR 140, Univ. of Auckland, 2000, 149-158 and Lecture Notes in Computer Science 2235, Springer-Verlag, 2001, 123-134.
  565. M. Kudlek, V. Mitrana, Closure Properties of Multiset Language Families, Fundamenta Informaticae, 49, 1-3 (2002), 191-203.
  566. M. Kudlek, V. Mitrana, Some Considerations on a Multiset Model for Membrane Computing, Pre-Proceedings of Second Workshop on Membrane Computing, Curtea de Arges, Romania, August 2002, 311-316, and in Gh. Paun, G. Rozenberg, A. Salomaa, C. Zandron, Eds., Membrane Computing. International Workshop, WMC-CdeA 2002, Curtea de Arges, Romania, August 2002, Springer-Verlag, LNCS 2597, Berlin, 2003, 352-359.
  567. K. Lakshmanan, Computational Universality and Solving NP Complete Problems using Insertion Deletion Tissue P Systems, manuscript 2003.
  568.  L. Lakshmanan, On the Crossroads of P Systems and Contextual Grammars: Variants, Computability, Complexity and Efficiency, PhD Thesis, Dept. of Mathematics, Indian Institute of Technology, Madras, 2004.
  569. K. Lakshmanan, R. Rama, On the power of tissue P systems with insertion and deletion rules, A. Alhazov, C. Martín-Vide and Gh. Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 304-318.
  570. K. Lakshmanan, R. Rama, The computational efficiency of insertion deletion tissue P systems. In Formal Models, Languages and Applications (K.G. Subramanian, K. Rangarajan, M. Mukund, eds.), World Scientific, Singapore, 2006.
  571. L. Ledesma, D. Manrique, A. Rodriguez-Paton, A. Silva, A Tissue P System and a DNA Microfluidic Device for Solving the Shortest Common Superstring Problem, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 281-291, and Soft Computing, 9(9), Sep. 2005, 679-685
  572. A. Leporati, Quantum (UREM) P systems: Background, definition and computational power, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 33-56
  573. A. Leporati, S. Felloni, Three Quantum Algorithms to Solve 3-SAT, Vol. II of Proc. of the Fourth Brainstorming Week on Membrane Computing, 137-160.
  574. A. Leporati, G. Mauri, C. Zandron, Quantum Sequential P Systems with Unit Rules and Energy Assigned to Membranes, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005, 465-484
  575. Leporati, D. Pagani, A Membrane Algorithm for the Min Storage Problem, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 397-416
  576. A. Leporati, D. Pescini, C. Zandron, Quantum Energy-based P Systems, First Brainstorming Workshop on Uncertainty in Membrane Computing, Palma de Mallorca, Spain, November 2004, 145-168.
  577. A. Leporati, C. Zandron, A family of P systems which solve 3-SAT, Proceedings of the ESF Exploratory Workshop on Cellular Computing (Complexity Aspects), Sevilla (Spain), January 31st - February 2nd, 2005, 247-256
  578. A. Leporati, C. Zandron, C. Ferretti, G. Mauri, On the Computational Power of Spiking Neural P Systems, in Proceedings of the Fifth Brainstorming Week on Membrane Computing, M.A. Gutierrez-Naranjo, Gh. Paun, A. Romero-Jimenez, A. Riscos-Nunez, (eds.), Sevilla (Spain), January 29th - February 2, 2007, 227-246
  579. A. Leporati, C. Zandron, C. Ferretti, G. Mauri, Solving numerical NP-complete problems with spiking neural P systems, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 405-424
  580. A. Leporati, C. Zandron, M.A. Gutierrez-Naranjo: P systems with input in binary form, Intern. J. Found. Computer Sci., 17, 1(2006), 127-146.
  581. A. Leporati, C. Zandron, G. Mauri, Conservative Computations in Energy-based P Systems, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 268-283.
  582. A. Leporati, C. Zandron, G. Mauri, Reversible P systems to simulate Fredkin circuits, Fundmenta Informaticae, 74, 4 (2006), 529--548.
  583. A. Leporati, C. Zandron, G. Mauri, Simulating the Fredkin Gate with Energy--Based P Systems, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 292-308, and Journal of Universal Computer Science, 10, 5, (2004), 600-619.
  584. A. Leporati, C. Zandron, G. Mauri, Solving the factorization problem with P systems, Pre-proc. of Int. Conf. on Bio-Inspired Computing - Theory and Applications, BIC-TA 2006, Membrane Computing Section, Wuhan, China, Sept. 2006, 144-153
  585. C. Li, Z. Dang, O.H. Ibarra, H.-C. Yen, Signaling P Systems and Verification Problems, Proc- ICALP 2005, LNCS 3586, Springer, 2005, 1462-1473.
  586. H. Liang, Research on Membrane Computing. Optimization Methods, PhD Thesis, Institute of Advanced Process Control, Zhejiang University, China, 2007.
  587. G. Liu, M. Ionescu, Further Remarks on Trace Languages in P Systems with Symport/Antiport, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 417-428
  588. J.Q. Liu, K. Shimohara, Evolutionary Dynamics for Heterogeneous P Systems, Journal of Xi'an Mining Institute, 2001.
  589. H. Long, Y. Fu, Building combinational P automata with rewriting and active membrane rules, Pre-proc. of Int. Conf. on Bio-Inspired Computing - Theory and Applications, BIC-TA 2006, Membrane Computing Section, Wuhan, China, Sept. 2006, 154-159
  590. D. Lopez, J.M. Sempere, Editing Distances between Membrane Structures, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005, 485-504
  591. M. Madhu, A Note on P Systems with Replicated Rewriting, submitted, 2002
  592. M. Madhu, Complexity Issues in Rewriting P Systems, Pre-proceedings of Fourth International Workshop on Descriptional Complexity of Formal Systems, DCFS-2002, London, Ontario, Canada, August 21-24, 2002
  593. M. Madhu, New Results in Rewriting P Systems, Rovira i Virgili Univ., Tech. Rep. No. 26, M. Cavaliere, C. Martín-Vide, Gh. Paun (Eds), Brainstorming Week on Membrane Computing; Tarragona, Feb 5-11 2003, 232-240.
  594. M. Madhu, Probabilistic Rewriting P Systems, International Journal of Foundations of Computer Science, 14, 1(2003), 157-166.
  595. M. Madhu, Rewriting P Systems. Improved Hierarchies, Th. Computer Science, 334(2005), 161-176.
  596. M. Madhu, K. Krithivasan, A Note on Hybrid P Systems, Grammars, 5(2002), 239-244.
  597. M. Madhu, K. Krithivasan, A Survey on Some Variants P Systems, Pre-Proceedings of Second Workshop on Membrane Computing, Curtea de Arges, Romania, August 2002, 317-330, and in Gh. Paun, G. Rozenberg, A. Salomaa, C. Zandron, Eds., Membrane Computing. International Workshop, WMC-CdeA 2002, Curtea de Arges, Romania, August 2002, Springer-Verlag, LNCS 2597, Berlin, 2003, 360-370.
  598. M. Madhu and K. Krithivasan, Contextual P Systems, Fundamenta Informatica, 49(1-3):179-189, January, 2002 and in C. Martin-Vide and Gh. Paun (eds), Pre-Proceedings of International Workshop on Membrane Computing (WMC-CdeA 2001), Curtea de Arges, Romania, August 20-25, 2001
  599. M. Madhu and K. Krithivasan, Generalized Normal Forms for Rewriting P Systems, Acta Informatica, 38(10):721-734, September, 2002
  600. M. Madhu and K. Krithivasan, Hybrid P Systems: Improved Universality Results, Poster in Unconventional Models of Computation, UMC-02, Himeji, Japan, October 15-19, 2002
  601. M. Madhu and K. Krithivasan, Improved Results about Universality of P Systems, EATCS Bulletin, (76):162-168, February, 2002
  602. M. Madhu and K. Krithivasan, Inter-Membrane Communication in P Systems, Romanian Journal of Information Science and Technology, 3(4), 335-352, 2000
  603. M. Madhu, K. Krithivasan, On a Class of P Automata, Intern. J. Computer Math., 80, 9(2003), 1111-1120.
  604. M. Madhu and K. Krithivasan, P Systems with Dynamic Membrane Polarization, Romanian Journal of Information Science and Technology, 4(1), 135-154, 2001
  605. M. Madhu and K. Krithivasan, P Systems with Membrane Creation: Universality and Efficiency, In M. Margenstern and Y. Rogozhin, editors, Proceedings of Third International Conference on Machine, Computations and Universality, MCU'2001, volume 2055 of LNCS, Springer-Verlag, pages 276-287, Chisinau, Moldova, May 2001
  606. M. Madhu, K. Krithivasan, Tissue P systems with leftmost derivation, Ramanujan Math. Soc. Lecture Notes Series, 3 (2007), 187--196.
  607. M. Madhu and K. Krithivasan, Universality Results for Some Variants of P Systems, In C.S. Calude, Gh. Paun, G. Rozenberg, and A. Salomaa, editors, Multiset Processing: Mathematical, Computer Science, and Molecular Computing Points of View, volume 2235 of LNCS, Springer-Verlag, pages 237-253, September 2001
  608. M. Madhu, V.S. Murty and K. Krithivasan, Hardware Realization of P Systems with Carriers, poster presentation in the Eighth International Conference on DNA based Computers, Hokkaido University, Sapporo Campus, Japan, June 10-13, 2002
  609. M. Malita, Membrane Computing in Prolog, Pre-proc. Workshop on Multiset Processing, Curtea de Arges, Romania, CDMTCS TR 140, Univ. of Auckland, 2000, 159-175.
  610. V. Manca, DNA and membrane algorithms for SAT, Fundamenta Informaticae, 49, 1-3 (2002), 205-221.
  611. V. Manca, Membrane Algorithms for Propositional Satisfiability, Pre-Proceedings of Workshop on Membrane Computing, Curtea de Arges, Romania, August 2001, Technical Report 17/01 of Research Group on Mathematical Linguistics, Rovira i Virgili University, Tarragona, Spain, 2001, 181-192
  612. V. Manca, Metabolic P systems for biomolecular dynamics, Pre-proc. of Int. Conf. on Bio-Inspired Computing - Theory and Applications, BIC-TA 2006, Membrane Computing Section, Wuhan, China, Sept. 2006, 15-26
  613. V. Manca, Monoidals for Molecules and Membranes, Romanian J. of Information Science and Technology, 4, 1-2 (2001),155-170.
  614. V. Manca, Monoidal Systems and Membrane Systems, Pre. Proc. Workshop on Multiset Processing, Curtea de Arges, Romania, CDMTCS TR 140, Univ. of Auckland, 2000, 176-190.
  615. V. Manca, MP Systems Approaches to Biochemical Dynamics: Biological Rhythms and Oscillations, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 40-53
  616. V. Manca, On the Dynamics of P Systems, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 29-43.
  617. V. Manca, Topics and Problems in Metabolic P Systems, Vol. II of Proc. of the Fourth Brainstorming Week on Membrane Computing, 173-184.
  618.  V. Manca, L. Bianco, F. Fontana, Evolution and oscillation in P systems: Applications to biological phenomena, Membrane Computing, International Workshop, WMC5, Milano, Italy, 2004, Selected Papers (G. Mauri, Gh. Paun, M.J. Perez-Jimenez, G. Rozenberg, A. Salomaa, eds.), LNCS 3365, Springer-Verlag, Berlin, 2005, 63-84.
  619. V. Manca, C. Martin-Vide, Gh. Paun, On the Power of P Systems with Replicated Rewriting, J. Automata, Languages, and Combinatorics, 6, 3 (2001), 359-374.
  620. S. Marcus, Bridging P Systems and Genomics: A Preliminary Approach, in Gh. Paun, G. Rozenberg, A. Salomaa, C. Zandron, Eds., Membrane Computing. International Workshop, WMC-CdeA 2002, Curtea de Arges, Romania, August 2002, Springer-Verlag, LNCS 2597, Berlin, 2003, 371-376.
  621. S. Marcus, Membranes versus DNA, Pre-Proceedings of Workshop on Membrane Computing, Curtea de Arges, Romania, August 2001, Technical Report 17/01 of Research Group on Mathematical Linguistics, Rovira i Virgili University, Tarragona, Spain, 2001, 193-198 and Fundamenta Informaticae, 49, 1-3 (2002), 223-227.
  622. M. Margenstern, Can hyperbolic geometry be of help for P systems?, A. Alhazov, C. Martín-Vide and Gh. Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 319-325.
  623. M. Margenstern, Can Hyperbolic Geometry Help Molecular Computing?, Rovira i Virgili Univ., Tech. Rep. No. 26, M. Cavaliere, C. Martín-Vide, Gh. Paun (Eds), Brainstorming Week on Membrane Computing; Tarragona, Feb 5-11 2003, 226-231.
  624. M. Margenstern (with L. Colson, N. Jonoska, Gh. Paun), About P Systems and Lambda-Calculus, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 44-62.
  625. M. Margenstern, C. Martin-Vide, Gh. Paun, Computing with Membranes; Variants with an Enhanced Membrane Handling, Proc. 7th Intern. Meeting on DNA Based Computers (N. Jonoska, N.C. Seeman, eds.), Tampa, Florida, USA, 2001, 53-62.
  626. M. Margenstern, V. Rogozhin, Y. Rogozhin, S. Verlan, About P Systems with Minimal Symport/Antiport Rules and Four Membranes, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 283-294
  627. E. Martegani, R. Tisi, F. Belotti, S. Colombo, C. Paiardi, J. Winderickx, P. Cazzaniga, D. Besozzi, G. Mauri, Identification of an intracellular signalling complex for ras/camp pathway in yeast: experimental evidences and modelling, ISSY 25 Conf., Hanassari, Espo, Finland, 2006.
  628. C. Martin-Vide, V. Mitrana, P Systems with Valuations, in vol. Unconventional Models of Computation (I. Antoniou, C.S. Calude, M.J. Dinneen, eds.), Springer-Verlag, London, 2000, 154-166.
  629. C. Martin-Vide, V. Mitrana, Gh. Paun, On the Power of P Systems with Valuations, Computation y Sistemas, 5, 2 (2002), 120-127.
  630. C. Martin-Vide, A. Paun, Gh. Paun, Membrane Computing: New Results, New Problems, Bulletin of the EATCS, 78 (October 2002), 204-212.
  631. C. Martin-Vide, A. Paun, Gh. Paun, On the power of P systems with symport rules, Journal of Universal Computer Sci., 8, 2 (2002), 317-331.
  632. C. Martin-Vide, A. Paun, Gh. Paun, G. Rozenberg, Membrane systems with coupled transport: Universality and normal forms, Fundamenta Informaticae 49, 1-3 (2002), 1-15.
  633. C. Martin-Vide, Gh. Paun, Computing with Membranes. One More Collapsing Hierarchy, Bulletin of the EATCS, 72 (October 2000), 183-187.
  634. C. Martin-Vide, Gh. Paun, Computing with Membranes (P Systems): Universality Results, Proc. Third. Intern. Conf. on Universal Machines and Computations, Chisinau, Moldova, 2001, Lect. Notes in Computer Science, 2055 (M. Margenstern, Y. Rogozhin, eds.), Springer-Verlag, 2001, 82-101.
  635. C. Martin-Vide, Gh. Paun, Elements of Formal Language Theory for Membrane Computing, Technical Report 21/01 of the Research Group on Mathematical Linguistics, Rovira i Virgili University, Tarragona, 2001.
  636. C. Martin-Vide, Gh. Paun, Language generating by means of membrane systems,Bulletin of the EATCS, 75 (Oct. 2001), 199-218.
  637. C. Martin-Vide, Gh. Paun, P Systems with Symport/Antiport Rules; A Survey, Modeling in Molecular Biology (G. Ciobanu, G. Rozenberg, eds), Springer, Berlin, 2004, 175-192.
  638. C. Martin-Vide, Gh. Paun, String Objects in P Systems, Proc. of Algebraic Systems, Formal Languages and Computations Workshop, Kyoto, 2000, RIMS Kokyuroku, Kyoto Univ., 2000, 161-169.
  639. C. Martin-Vide, Gh. Paun, J. Pazos, A. Rodriguez-Paton, Tissue P Systems, TUCS Technical Report 421, September 2001, and Theoretical Computer Science, 296 (2), 295-326, March 2003.
  640. C. Martin-Vide, Gh. Paun, A. Rodriguez-Paton, On P Systems with Membrane Creation, Computer Science Journal of Moldova, 9, 2 (2001), 134 - 145
  641. C. Martin-Vide, Gh. Paun, A. Rodriguez-Paton, P Systems with Immediate Communication, Romanian J. Information Sci. Technology, 4, 1-2 (2001), 171-182.
  642. C. Martin-Vide, Gh. Paun, G. Rozenberg, Membrane Systems with Carriers, Theoretical Computer Sci., 270 (2002), 779-796.
  643. J.L. Maté, A. Rodríguez-Patón, A. Silva, On the Power of P Systems with DNA-Worms, Pre-Proceedings of Workshop on Membrane Computing, Curtea de Arges, Romania, August 2001, Technical Report 17/01 of Research Group on Mathematical Linguistics, Rovira i Virgili University, Tarragona, Spain, 2001, 209-220 and Fundamenta Informaticae, 49, 1-3 (2002), 229-239.
  644. J.L. Mate, A. Rodriguez-Paton, A. Silva, On the power of P systems with DNA-worm-objects, Fundamenta Informaticae, 49, 1-3 (2002), 229-239.
  645. G. Mauri, Gh. Paun, M.J. Perez-Jimenez, G. Rozenberg, A. Salomaa, eds., Membrane Computing, International Workshop, WMC5, Milano, Italy, 2004, Selected Papers, LNCS 3365, Springer-Verlag, Berlin, 2005 (417 + viii pages).
  646. G. Mauri, C. Zandron, Membrane Systems for Computing, in vol. Emergence in Complex, Cognitive, Social, and Biological Systems (G. Minati, E. Pessa, eds.), Kluwer Academic, New York, 2002, 213-232.
  647. T. Mazza, Towards a complete covering of SBML functionalities, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 425-444
  648. O. Michel, F. Jacquemard, Analysis of the Needham-Schroeder public-key protocol with MGS, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 295-315.
  649. D. Molteni, C. Ferretti, G. Mauri, Frequency membrane systems, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 445-454
  650. O. Moya Mesa, Plasma membrane, compartmentation, transport, and imprecisions, First Brainstorming Workshop on Uncertainty in Membrane Computing, Palma de Mallorca, Spain, November 2004, 13-16.
  651. N. Murphy, D. Woods, Active membrane systems without charges and using only symmetric elementary division characterize P, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 455-470
  652. M. Muskulus, An observation on the Sevilla complexity, Proceedings of the ESF Exploratory Workshop on Cellular Computing (Complexity Aspects), Sevilla (Spain), January 31st - February 2nd, 2005, 257-266
  653. M. Muskulus, D. Besozzi, R. Brijder, P. Cazzaniga, S. Houweling, D. Pescini, G. Rozenberg, Cycles and communicating classes in  membrane systems and molecular dynamics, Theoretical Computer Sci., to appear.
  654. M. Muskulus, R. Brijder: Complexity of biocomputation: symbolic dynamics in membrane systems, Intern. J. Found. Computer Sci., 17, 1(2006), 147-166.
  655. M. Muskulus, R. Brijder, First steps towards a geometry of computation, Proceedings of the Third Brainstorming Week on Membrane Computing, Sevilla (Spain), January 31st - February 4th, 2005, 197-218
  656. M. Muskulus, S. Houweling, G. Rozenberg, D. Besozzi, P. Cazzaniga, D. Pescini, R. Brijder, Reaction Cycles in Membrane Systems and Molecular Dynamics, Vol. II of Proc. of the Fourth Brainstorming Week on Membrane Computing, 185-208.
  657. H. Nagda, A. Paun, A. Rodrıguez-Paton, P Systems with Symport/Antiport and Time, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 429-442
  658. I.A. Nepomuceno-Chamorro, A Java Simulator for Basic Transition P Systems, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 309-315, and Journal of Universal Computer Science, 10, 5, (2004), 620-619.
  659. I. Nepomuceno, J.A. Nepomuceno, F.J. Romero-Campero, A tool for using the SBML format to represent P systems which model biological reaction networks, Proceedings of the Third Brainstorming Week on Membrane Computing, Sevilla (Spain), January 31st - February 4th, 2005, 219- 228
  660. V. Nguyen, D. Kearney, G. Gioiosa, Balancing performance, flexibility and scalability in a parallel computing platform for membrane computing applications, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 471-508
  661. D.V. Nicolau Jr., G. Solana, F. Fulga, D.V. Nicolau Sr., A ``C" Library for Implementing P Systems on the Electronic Computer (Abstract), Pre-Proceedings of Workshop on Membrane Computing, Curtea de Arges, Romania, August 2001, Technical Report 17/01 of Research Group on Mathematical Linguistics, Rovira i Virgili University, Tarragona, Spain, 2001, 221-222 and Fundamenta Informaticae, 49, 1-3 (2002), 241-248.
  662. T.Y. Nishida, A Membrane Computing Model of Photosynthesis, in G. Ciobanu, Gh. Paun, M.J. Perez-Jimenez, eds., Applications of Membrane Computing, Springer-Verlag, Berlin, 2005, 179--200.
  663. T.Y. Nishida, An application of P systems: A new algorithm for NP-complete optimization problems, in N. Callaos, et. al., eds.,  Proceedings of the 8th World Multi-Conference on Systems, Cybernetics and Informatics, vol. V, 2004, 109-112.
  664. T.Y. Nishida, An approximate algorithm for NP-complete optimization problems exploiting P-systems, First Brainstorming Workshop on Uncertainty in Membrane Computing, Palma de Mallorca, Spain, November 2004, 185-192.
  665. T.Y. Nishida, Membrane Algorithm: An Approximate Algorithm for NP-Complete Optimization Problems Eploiting P Systems, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005, 26-43.
  666. T.Y. Nishida, Membrane algorithm with brownian subalgorithm and genetic subalgorithm, Intern. J. Found. Computer Sci., 18, 6 (2007), 1353--1360.
  667. T.Y. Nishida, Simulations of Photosynthesis by a K-Subset Transforming System with Membranes, Pre-Proceedings of Workshop on Membrane Computing, Curtea de Arges, Romania, August 2001, Technical Report 17/01 of Research Group on Mathematical Linguistics, Rovira i Virgili University, Tarragona, Spain, 2001, 223-228 and  Fundamenta Informaticae, 49, 1-3 (2002), 249-259.
  668. A. Obtulowicz, Deterministic P Systems for solving SAT Problem, Romanian J. of Information Science and Technology, 4, 1-2 (2001), 195-202.
  669. A. Obtulowicz, Fuzzy P systems and fuzzy rule-based decisionmaking systems, First Brainstorming Workshop on Uncertainty in Membrane Computing, Palma de Mallorca, Spain, November 2004, 193-194.
  670. A. Obtulowicz, Gandy's principles for mechanisms and membrane computing, Proceedings of the ESF Exploratory Workshop on Cellular Computing (Complexity Aspects), Sevilla (Spain), January 31st - February 2nd, 2005, 267-276, and IJFCS, 17, 1(2006), 167-182.
  671. A. Obtulowicz, General Multi-fuzzy Sets and Fuzzy Membrane Systems, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 316-326.
  672. A. Obtulowicz, Mathematical (Denotational) Semantics of Some Reducts of Ambient Calculus and Brane Calculi, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 443-454
  673. A. Obtulowicz, Mathematical Models of Uncertainty with a Regard to Membrane Systems, Rovira i Virgili Univ., Tech. Rep. No. 26, M. Cavaliere, C. Martín-Vide, Gh. Paun (Eds), Brainstorming Week on Membrane Computing; Tarragona, Feb 5-11 2003, 241-246, and Natural Computing, 2 (3), 251-263, Aug 2003.
  674. A. Obtulowicz, Membrane Computing and One-Way Functions, Intern. J. Found. Computer Science, 12, 4(2001), 551-558.
  675. A. Obtulowicz, Multigraphical membrane systems: a visual formalism for modeling complex systems in biology and evolving neural networks, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 509-512
  676. A. Obtulowicz, New mathematical foundations of membrane computing; Attacking NP complete problems revisited, submitted 2003.
  677. A. Obtulowicz, Note on some recursive family of P systems with active membranes, manusript, 2001
  678. A. Obtulowicz, On an Idea of a (Possibly) Uniform Data Base for Life Sciences from Molecular Biology to Cognitive Psychology, Vol. II of Proc. of the Fourth Brainstorming Week on Membrane Computing, 209-212.
  679. A. Obtulowicz, On P Systems with Active Membranes Solving Integer Factorizing Problem in a Polynomial Time, in Multiset Processing. Mathematical, Computer Science, and Molecular Computing Points of View (C.S. Calude, Gh. Paun, G. Rozenberg, A. Salomaa, eds.), Lecture Notes in Computer Science 2235, Springer-Verlag, 2001, 267-286.
  680. A. Obtulowicz, Probabilistic P systems, Pre-Proceedings of Second Workshop on Membrane Computing, Curtea de Arges, Romania, August 2002, 331-332, and in Gh. Paun, G. Rozenberg, A. Salomaa, C. Zandron, Eds., Membrane Computing. International Workshop, WMC-CdeA 2002, Curtea de Arges, Romania, August 2002, Springer-Verlag, LNCS 2597, Berlin, 2003, 377-387.
  681. A. Obtulowicz, Relational Membrane Systems, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005,505-509
  682. A. Obtulowicz, Some Mathematical Methods and Tools for an Analysis of Harmony-Seeking Computations, in Proceedings of the Fifth Brainstorming Week on Membrane Computing, M.A. Gutierrez-Naranjo, Gh. Paun, A. Romero-Jimenez, A. Riscos-Nunez, (eds.), Sevilla (Spain), January 29th - February 2, 2007, 246-262
  683. A. Obtulowicz, Gh. Paun, (In search of) Probabilistic P systems, BioSystems, 70, 2 (2003), 107-121.
  684. A. Ortega de la Puente, R. Núñez Hervás, M. de la Cruz Echeandía, M. Alfonseca, Christiansen grammar for some P systems, Proceedings of the Third Brainstorming Week on Membrane Computing, Sevilla (Spain), January 31st - February 4th, 2005, 229-248
  685. M. Oswald, Independent agents in a globalized world modelled by tissue P systems. Conf. Artificial Life and Robotics, 2006
  686. M. Oswald, P Automata, PhD Thesis, Faculty of Computer Science, TU Vienna, November 2003.
  687. M. Oswald, R. Freund, P Automata with membrane channels, Proceedings of the eighth Int. Symp. on Artificial Life and Robotics, (M. Sugisaka, H., Tanaka, Eds.), Beppu, Japan, 2003, 275--278.
  688. M. Oswald, R. Freund, Partial halting in P systems, Intern. J. Found. Computer Sci., 18, 6 (2007), 1215--1225.
  689. L. Pan, A. Alhazov: Solving HPP and SAT by P Systems with Active Membranes and Separation Rules, IEEE Transactions on Computers, 2005.
  690. L. Pan, A. Alhazov, T.-O. Ishdorj: Further Remarks on P Systems with Active Membranes, Separation, Merging, and Release Rules.
    Soft Computing - A Fusion of Foundations, Methodologies and Applications, volume 9, number 9, 2005, 686-690, and in  Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho-Caparrini: TR 01/2004, University of Seville, Second Brainstorming Week on Membrane Computing, Sevilla, 2004, 316-324, and Soft Computing, 9(9), Sep. 2005, 686-690
  691. L. Pan, T.-O. Ishdorj, P Systems with Active Membranes and Separation Rules, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 325-341, and Journal of Universal Computer Science, 10, 5, (2004), 630-649.
  692. L. Pan, C. Martin-Vide, Solving Multidimensional 0-1 Knapsack Problem by P Systems with Input and Active Membranes, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 342-353
  693. L. Pan, Gh. Paun, eds., Pre-proceedings of the International Conference Bio-Inspired Computing -Theory and Applications, BIC-TA 2006, Membrane Computing Section, Wuhan, China,September 18-22, 200
  694. G. Pardini, Topological Calculus of Looping Sequences, Master Thesis, Pisa Univ., 2007
  695. A. Paun, Membrane systems with symport/antiport. Universality results, Pre-Proceedings of Second Workshop on Membrane Computing, Curtea de Arges, Romania, August 2002, 333-344.
  696. A. Paun, On P Systems with Global Rules, Proc. 7th Intern. Meeting on DNA Based Computers (N. Jonoska, N.C. Seeman, eds.), Tampa, Florida, USA, 2001, 43-52.
  697. A. Paun, On P Systems with Membrane Division, in vol. Unconventional Models of Computation (I. Antoniou, C.S. Calude, M.J. Dinneen, eds.), Springer-Verlag, London, 2000, 187-201.
  698. A. Paun, On P Systems with Partial Parallel Rewriting, Romanian Journal of Information Science and Technology, 4, 1-2 (2001), 203-210.
  699. A. Paun, P Systems with String-Objects: Universality Results, Pre-Proceedings of Workshop on Membrane Computing, Curtea de Arges, Romania, August 2001, Technical Report 17/01 of Research Group on Mathematical Linguistics, Rovira i Virgili University, Tarragona, Spain, 2001, 229-242.
  700. A. Paun, Unconventional Models of Computation: DNA and Membrane Computing, PhD Thesis, University of Western Ontario, London, Ontario, Canada, May 2003.
  701. A. Paun, Gh. Paun, Small Universal Spiking Neural P Systems, Vol. II of Proc. of the Fourth Brainstorming Week on Membrane Computing, 213-134.
  702. A. Paun, Gh. Paun, The Power of Communication: P Systems with Symport/Antiport, New Generation Computers, 20, 3 (2002), 295--306
  703. A. Paun, Gh. Paun, A. Rodriguez-Paton, Further remarks on P systems with symport, Ann. Univ. Al.I. Cuza Iasi, Math.-Informatics Series, 10 (2001), 3-18.
  704. A. Paun, Gh. Paun, G. Rozenberg, Computing by Communication in networks of Membranes, Intern. J. of Foundations of Computer Science, 13, 6 (2002), 779-798.
  705. A. Paun, M. Paun, On Membrane Computing Based on Splicing, in vol. Where Mathematics, Computer Science, Linguistics, and Biology Meet (C. Martin-Vide, V. Mitrana, eds.), Kluwer, Dordrecht, 2001, 409-422.
  706. A. Paun, B. Popa, P systems with proteins on membranes and membrane division, Proc. 10th DLT Conf., Santa Barbara, USA, 2006, LNCS 4036, Springer, Berlin, 2006, 292--303.
  707. A. Paun, B. Popa, Rewriting P systems with communication by symport rules, submitted 2006
  708. A. Paun, A. Rodriguez-Paton, On flip-flop membrane systems with proteins, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 513-526
  709. Gh. Paun, 2006 Research Topics in Membrane Computing, Vol. II of Proc. of the Fourth Brainstorming Week on Membrane Computing, 235-252.
  710. Gh. Paun, A quick overview of membrane computing with some details about spiking neural P systems,  Frontiers of Computer Science in China, 1,1 (2007), 37--49.
  711. Gh. Paun, Computing with Membranes, Journal of Computer and System Sciences, 61, 1 (2000), 108-143, and Turku Center for Computer Science-TUCS Report No 208, 1998 (www.tucs.fi).
  712. Gh. Paun, Computing with Membranes. A Correction, Two Problems, and Some Bibliographical Remarks, Bulletin of the EATCS, 68 (1999), 141-144.
  713. Gh. Paun, Computing with Membranes - A Variant: P Systems with Polarized Membranes, Intern. J. of Foundations of Computer Science, 11, 1 (2000), 167-182, and CDMTCS TR 098, Univ. of Auckland, 1999 (www.cs.auckland. ac.nz/CDMTCS)
  714. Gh. Paun, Computing with Membranes. An Introduction, Bulletin of the EATCS, 67 (Febr. 1999), 139-152.
  715. Gh. Paun, Computing with Membranes: Attacking NP-Complete Problems, in vol. Unconventional Models of Computation (I. Antoniou, C.S. Calude, M.J. Dinneen, eds.), Springer-Verlag, London, 2000, 94-115
  716. Gh. Paun, Computing with Membranes (P Systems): Twenty Six Research Topics, CDMTCS TR 119, Univ. of Auckland, 2000 (www.cs.auckland.ac.nz/ CDMTCS).
  717. Gh. Paun, Descriptional complexity issues in membrane computing, Proc. of DCFS Workshop, Budapest, Hungary, 2003, 66-77.
  718. Gh. Paun, From Cells to Computers: Computing with Membranes (P Systems), Proc. Intern. Workshop Grammar Systems 2000 (R. Freund, A. Kelemenova, eds.), Bad Ischl, Austria, July 2000, 9-40, and BioSystems, 59, 3 (2001), 139-158.
  719. Gh. Paun, Further open problems in membrane computing, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 354-365.
  720. Gh. Paun, Further Research Topics About P Systems, Pre-Proceedings of Workshop on Membrane Computing, Curtea de Arges, Romania, August 2001, Technical Report 17/01 of Research Group on Mathematical Linguistics, Rovira i Virgili University, Tarragona, Spain, 2001, 243-250.
  721. Gh. Paun, Further twenty six open problems in membrane computing, Proceedings of the Third Brainstorming Week on Membrane Computing, Sevilla (Spain), January 31st - February 4th, 2005, 249-262
  722. Gh. Paun, Introduction to Membrane Computing, First Brainstorming Workshop on Uncertainty in Membrane Computing, Palma de Mallorca, Spain, November 2004, 17-65.
  723. Gh. Paun, Grammar systems vs. membrane computing: A preliminary approach, Pre-Proc. Workshop on Grammar Systems, MTA SZTAKI, Budapest, 2004, 225--245.
  724. Gh. Paun, Languages in membrane computing. Some details for spiking neural P systems, Proc. 10th DLT Conf. (invited talk), Santa Barbara, USA, 2006, LNCS 4036, Springer, Berlin, 2006, 20--35.
  725. Gh. Paun, Learning new computing models from biology: Membrane computing, ICCC Conf., Oradea, May 2004, 15-30
  726. Gh. Paun, Membrane computing, Proc. FCT 2003 (invited lecture), LNCS 2751, Springer, 2003, 284-295.
  727. Gh. Paun, Membrane computing, Encyclopedia of Complexity and Systems Science, Springer, in press.
  728. Gh. Paun, Membrane Computing. An Introduction, Springer-Verlag, Berlin (Natural Computing Series), 2002.
  729.  Gh. Paun, Membrane computing. An introduction, Pre-Proc. Unconventional Programming Paradigms, UPP04, Le Mont Saint-Michel, September 2004, 39--48.
  730. Gh. Paun, Membrane computing (after the second Brainstorming Week, Sevilla, February 2004), Bulletin of the EATCS, June 2004.
  731. Gh. Paun, Membrane computing and brane calculi (some personal notes), Proc. MeCBIC 2006 (N. Busi, C. Zandron, eds.), Venice, 2006, 1--9.
  732. Gh. Paun, Membrane computing as a framework for bio-modeling (an informal glimpse), Proc. Algebraic Biology 2007 (H. Anai, K. Horimoto, T. Kutsia, eds.), Castle Hagenburg, Austria, July 2007, LNCS 4545, Springer-Verlag, 2007, 23--35.
  733. Gh. Paun, Membrane computing. Basic ideas, results, applications, in G. Ciobanu, Gh. Paun, Pre-Proc. of First International Workshop on Theory and Application of P Systems, Timisoara, Romania, September 26-27, 2005, 1-8
  734. Gh. Paun, Membrane computing: Main ideas, basic results, applications, in vol Molecular Computational Models: Unconventional Approaches (M. Gheorghe, ed.), Idea Group Publ., London, 2004.
  735. Gh. Paun, Membrane computing: Power and efficiency (A quick overview), Proc. DNA10 Conf., (C.Ferretti, G. Mauri, C. Zandron, eds) Milano, 2004, 1-15.
  736. Gh. Paun, Membrane computing: power, efficiency, applications, New Computational Paradigms. First Conf. on Computability in Europe, CiE2005, Amsterdam} (S. Barry Cooper, B. Lowe, L. Torenvliet, eds.), LNCS 3536, Springer, 2005, 396--407.
  737. Gh. Paun, Membrane Computing. Some non-standard ideas, Aspects of Molecular Computing, LNCS 2950, Springer, 2004, 322-337.
  738.  Gh. Paun, Membrane computing. Some recent results and current research topics, in Recent Results in Natural Computing (M. Perez-Jimenez, A. Romero-Jimenez, F. Sancho-Caparrini, eds.), Kronos Editorial, Sevilla, 2004, 135-166.
  739. Gh. Paun, On the Generative Power of P Systems, Theorietag 2000; Workshop on New Computing Paradigms (R. Freund, ed.), TU University Vienna, 2000, 59-78.
  740. Gh. Paun, One more universality result for P systems with objects on membranes, Proceedings of the Third Brainstorming Week on Membrane Computing, Sevilla (Spain), January 31st - February 4th, 2005, 263-274
  741. Gh. Paun, P Systems with Active Membranes: Attacking NP-Complete Problems, J. Automata, Languages and Combinatorics, 6, 1 (2001), 75-90, and CDMTCS TR 102, Univ. of Auckland, 1999 (www.cs. auckland. ac.nz/CDMTCS).
  742. Gh. Paun, Spiking neural P systems. A tutorial, Bulletin of the EATCS, 91 (Febr. 2007), 145--159
  743. Gh. Paun, Spiking neural P systems. Power and efficiency, Bio-Inspired Modeling of Cognitive Tasks, Proc. IWINAC 2007 (J. Mira, J.R. Alvarez, eds.), Mar Menor, 2007, LNCS 4527, 153--169.
  744. Gh. Paun,  Spiking neural P systems used as acceptors and transducers, Pre-proc. CIAA 2007, Prague, July 2007, 1-4.
  745. Gh. Paun, Spiking neural P systems with astrocyte-like control, JUCS, in press.
  746. Gh. Paun, Twenty Six Research Topics About Spiking Neural P Systems, in Proceedings of the Fifth Brainstorming Week on Membrane Computing, M.A. Gutierrez-Naranjo, Gh. Paun, A. Romero-Jimenez, A. Riscos-Nunez, (eds.), Sevilla (Spain), January 29th - February 2, 2007, 363-280
  747. Gh. Paun, R. Paun, Membrane Computing and Economics: Numerical P Systems, Fundamenta Informaticae, 2006.
  748. Gh. Paun, R. Paun, Membrane computing as a framework for modeling economic processes, submitted, 2005.
  749. Gh. Paun, R. Paun, Membrane computing models for economics. An invitation-survey, Studii \c si Cercet\u ari de Calcul Economic si Cibernetica Economica, 2006 (to appear).
  750. Gh. Paun, J. Pazos, M.J. Perez-Jimenez, A. Rodriguez-Paton, Symport/antiport P systems with three objects are  universal, Fundamenta Informaticae, 64, 1-4(2005).
  751. Gh. Paun, M.J. Perez-Jimenez, Membrane computing: Brief introduction, recent results and applications, submitted 2005.
  752. Gh. Paun, M. Perez-Jimenez, Recent computing models inspired from Biology: DNA and membrane computing, Theoria, 18, 46 (2003), 71-84.
  753. Gh. Paun, M.J. Perez-Jimenez, Spiking neural P systems. An overview, in vol. Advancing Artificial Intelligence through Biological Process Applications (Ana B. Porto, A. Pazos, W. Buno, eds.), Idea Group Publ., London, 2008, in press.
  754. Gh. Paun,  M.J. Perez-Jimenez, A. Riscos-Nunez, P Systems with Tables of Rules, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 366-379.
  755. Gh. Paun,  M.J. Perez-Jimenez, A. Riscos-Nunez, Tissue P Systems with Cell Division, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 380-386.
  756. Gh. Paun, M.J. Perez-Jimenez, G. Rozenberg, Computing morphisms by spiking neural P systems, Intern. J. Found. Computer Sci., 18, 6 (2007), 1371--1382.
  757. Gh. Paun, M.J. Perez-Jimenez, G. Rozenberg, Infinite spike trains in spiking neural P systems, submitted, 2005
  758. Gh. Paun, M.J. Perez-Jimenez, G. Rozenberg, Spike trains in spiking neural P systems, submitted, 2005
  759. Gh. Paun, M.J. Perez-Jimenez, A. Salomaa, Bounding the indegree of spiking neural P systems, TUCS Technical Report 773, 2006.
  760. Gh. Paun, M. Perez-Jimenez, F. Sancho-Caparrini, On the reachability problem for P systems with symport/antiport, Proc. AFL10, Debrecen, 2002.
  761. Gh. Paun, G. Rozenberg, A Guide to Membrane Computing, Theoretical Computer Science, vol 287, nr 1 (2002), pages 73-100.
  762. Gh. Paun, G. Rozenberg, A. Salomaa, Membrane Computing with External Output, Fundamenta Informaticae, 41, 3 (2000), 259-266, and Turku Center for Computer Science-TUCS Report No 218, 1998 (www.tucs.fi).
  763. Gh. Paun, Y. Sakakibara, T. Yokomori, P Systems on Graphs of Restricted Forms, Publ. Math. Debrecen, 60(2002), 635-660.
  764. Gh. Paun, Y. Suzuki, H. Tanaka, P Systems with energy accounting, Int. J. Computer Math., 78, 3 (2001), 343-364.
  765. Gh. Paun, Y. Suzuki, H. Tanaka, T. Yokomori, On the Power of Membrane Division in P Systems, Theoretical Computer Science, 324, 1(2004), 61-85.
  766. Gh. Paun, G. Thierrin, Multiset Processing by Means of Systems of Finite State Transducers, Pre-Proc. of Workshop on Implementing Automata WIA99, Potsdam, August 1999, Preprint 5/1999 of Univ. Potsdam (O. Boldt, H. Jürgensen, L. Robbins, eds.) XV 1-17, and Auckland University, CDMTCS Report No 101, 1999 (www.cs.auckland.ac.nz/CDMTCS).
  767. Gh. Paun, T. Yokomori, Membrane Computing Based on Splicing, Preliminary Proc. of Fifth Intern. Meeting on DNA Based Computers (E. Winfree, D. Gifford, eds.), MIT, June 1999, 213-227.
  768. Gh. Paun, T. Yokomori, Simulating H Systems by P Systems, Journal of Universal Computer Science, 6, 1 (2000), 178-193 (www.iicm.edu/jucs).
  769. Gh. Paun, S. Yu, On Synchronization in P Systems, Fundamenta Informaticae, 38, 4 (1999), 397-410, and University of Western Ontario Report TR 539, 1999 (www.csd.uwo.ca/faculty/syu/TR539.html).
  770. R. Paun, Producers, retailers, and their investments. A membrane computing approach, manuscript, 2005
  771. J. Pazos, A. Rodriguez-Paton, A. Silva, Solving SAT in linear time with a neural-like membrane system, Proc. Conf. on Computational Methods in Neural Modeling, LNCS 2686 (J. Mira, J.R. Alvarez, eds.), Springer, 2003, 662--669.
  772. M.J. Perez-Jimenez, Complexity Classes in Membrane Computing, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 63-63.
  773. M.J. Pérez-Jiménez, Computational complexity aspects of membrane computing: Ideas, results, open problems, Proceedings of the ESF Exploratory Workshop on Cellular Computing (Complexity Aspects), Sevilla (Spain), January 31st - February 2nd, 2005, 277-292
  774. M.J. Perez-Jimenez, P systems-based Modelling of Cellular Signalling Pathways, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 54-73
  775. A. Pérez-Jiménez, M.J. Pérez-Jiménez, F. Sancho-Caparrini, Computing a Partial Mapping by a P System: Design and Verification, Rovira i Virgili Univ., Tech. Rep. No. 26, M. Cavaliere, C. Martín-Vide, Gh. Paun (Eds), Brainstorming Week on Membrane Computing; Tarragona, Feb 5-11 2003, 247-260.
  776. A. Perez-Jimenez, M.J. Perez-Jimenez, F. Sancho-Caparrini, Formal Verification of a Transition P system Generating the Set {2^n+n^2+n | n > 1}, Rovira i Virgili Univ., Tech. Rep. No. 26, M. Cavaliere, C. Martín-Vide, Gh. Paun (Eds), Brainstorming Week on Membrane Computing; Tarragona, Feb 5-11 2003, 261-269.
  777. M.J. Pérez-Jiménez, An Approach to Computational Complexity in Membrane Computing, First Brainstorming Workshop on Uncertainty in Membrane Computing, Palma de Mallorca, Spain, November 2004, 67-93.
  778. M.J. Perez-Jimenez, A. Riscos-Nunez, A linear-time solution for the knapsack problem using active membranes, A. Alhazov, C. Martín-Vide and Gh. Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22, 2003.
  779. M.J. Perez-Jimenez, F.J. Romero-Campero, A CLIPS Simulator for Recognizer P Systems with Active Membranes, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 387-413.
  780. M.J. Perez-Jimenez, F.J. Romero-Campero, An Efficient Family of P Systems for Packing Items into Bins, Journal of Universal Computer Science, 10, 5, (2004), 650-670.
  781. M.J. Perez-Jimenez, F.J. Romero-Campero, Membrane computing as production systems, Recent Results in Natural Computing (M.J. Perez-Jimenez, A. Romero-Jimenez, F. Sancho-Caparrini, eds), Univ. Sevilla, 2004, 167--204.
  782. M.J. Perez-Jimenez, F.J. Romero-Campero, Modelling EGFR signalling network using continuous membrane systems, Third Workshop on Computational Method in Systems Biology, Edinburgh, 2005.
  783. M.J. Perez-Jimenez, F.J. Romero-Campero, Solving the BINPACKING Problem by Recognizer P Systems with Active Membranes, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 414-430.
  784. M.J. Perez-Jimenez, F.J. Romero-Campero, A study of the robustness of the EGFR signalling cascade using continuos membrane systems, First Intern. Work-Conference on the Interplay between Natural and Artificial Computation, IWINAC 2005, La Palma de Gran Canaria, 2005.
  785. M.J. Perez-Jimenez, F.J. Romero-Campero, Modelling Vibrio fischeri's behaviour Using P Systems, Systems Biology Workshop, ECAL 2005, Sept. 2005.
  786. M.J. Perez-Jimenez, F.J. Romero-Campero, Trading Polarizations for Bi-stable Catalysts in P Systems with Active Membranes, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 327-342.
  787. M.J. Perez-Jimenez, A. Romero-Jimenez, Simulating Turing machines by P systems, Fundamenta Informaticae, 49, 1-3 (2002), 273-287.
  788. M.J. Pérez-Jiménez, A. Romero-Jiménez, F. Sancho-Caparrini, Complexity Classes in Cellular Computing with Membranes, Rovira i Virgili Univ., Tech. Rep. No. 26, M. Cavaliere, C. Martín-Vide, Gh. Paun (Eds), Brainstorming Week on Membrane Computing; Tarragona, Feb 5-11 2003, 270-278, and Natural Computing, 2 (3), 265-285, Aug 2003
  789. M.J. Perez Jimenez, A. Romero Jimenez, F. Sancho Caparrini, Decision P systems and the P \neq NP conjecture, Pre-Proceedings of Second Workshop on Membrane Computing, Curtea de Arges, Romania, August 2002, 345-354, and in Gh. Paun, G. Rozenberg, A. Salomaa, C. Zandron, Eds., Membrane Computing. International Workshop, WMC-CdeA 2002, Curtea de Arges, Romania, August 2002, Springer-Verlag, LNCS 2597, Berlin, 2003, 388-399.
  790. M.J. Perez-Jimenez, A. Romero-Jimenez, F. Sancho-Caparrini, Computationally Hard problems addressed through P systems, in G. Ciobanu, Gh. Paun, M.J. Perez-Jimenez, eds, Applications of Membrane Computing, Springer-Verlag, Berlin, 2005, 313-346.
  791. M.J. Perez-Jimenez, A. Romero-Jimenez, F. Sancho-Caparrini: Modelos de computacion celular con membranas, Boletin de la Sociedad Espaniola Matematica Aplicada, 29 (September 2004), 57-88
  792. M.J. Pérez-Jiménez, A. Romero-Jiménez, F. Sancho-Caparrini, Solving VALIDITY Problem by Active Membranes with Input, Rovira i Virgili Univ., Tech. Rep. No. 26, M. Cavaliere, C. Martín-Vide, Gh. Paun (Eds), Brainstorming Week on Membrane Computing; Tarragona, Feb 5-11 2003, 279-290.
  793. M.J. Perez-Jimenez, A. Romero-Jimenez, F. Sancho-Caparrini, The P versus NP problem through cellular computing with membranes, Aspects of Molecular Computing, LNCS 2950, Springer, 2004, 338-352.
  794. M. Perez Jimenez, A. Romero Jimenez, F. Sancho Caparrini, Teoria de la complejidad en modelos de computacion celular con membranas, Kronos Editorial, Sevilla, 2002.
  795. M.J. Perez-Jimenez, F. Sancho-Caparrini, A formalization of basic P systems, Fundamenta Informaticae, 49, 1-3 (2002), 261-272.
  796. M. Perez Jimenez, F. Sancho Caparrini, Computacion celular con membranas: Un modelo no convencional, Kronos Editorial, Sevilla, 2002.
  797. M.J. Perez-Jimenez, F. Sancho-Caparrini, Computing a partial mapping by P systems: Design and verification, Rovira i Virgili Univ., Tech. Rep. No. 26, M. Cavaliere, C. Martín-Vide, Gh. Paun (Eds), Brainstorming Week on Membrane Computing; Tarragona, Feb 5-11 2003, 247-260.
  798. M.J. Perez-Jimenez, F. Sancho-Caparrini, Verification of non-deterministic transition P systems solving SAT problem, Rovira i Virgili Univ., Tech. Rep. No. 26, M. Cavaliere, C. Martín-Vide, Gh. Paun (Eds), Brainstorming Week on Membrane Computing; Tarragona, Feb 5-11 2003, 291-304.
  799. M.J. Perez-Jimenez, F. Sancho-Caparrini, Verifying a P system generating squares, Romanian J. of Inform. Sci. and Technology, 5, 2-3 (2002), 295-305.
  800. M.J. Perez-Jimenez, T. Yokomori, Membrane Computing Schema Based on String Insertions, in Proceedings of the Fifth Brainstorming Week on Membrane Computing, M.A. Gutierrez-Naranjo, Gh. Paun, A. Romero-Jimenez, A. Riscos-Nunez, (eds.), Sevilla (Spain), January 29th - February 2, 2007, 281- 298
  801. D. Pescini, D. Besozzi, G. Mauri, Investigating Local Evolutions in Dynamical Probabilistic P Systems, in G. Ciobanu, Gh. Paun, Pre-Proc. of First International Workshop on Theory and Application of P Systems, Timisoara, Romania, September 26-27, 2005, 83-90
  802. D. Pescini, D. Besozzi, G. Mauri, C. Zandron, Dynamical probabilistic P systems, Intern. J. Found. Computer Sci., 17, 1 (2006), 183--204
  803. D. Pescini, D. Besozzi, C. Zandron, G. Mauri, Dynamical probabilistic P systems: Definitions and applications, Proceedings of the Third Brainstorming Week on Membrane Computing, Sevilla (Spain), January 31st - February 4th, 2005, 275-288
  804. I. Petre, A Normal Form for P Systems, Bulletin of the EATCS, 67 (Febr. 1999), 165-172.
  805. I. Petre, L. Petre, Mobile Ambients and P Systems, Workshop on Formal Languages, FCT99, Iasi, 1999, J. Universal Computer Sci., 5, 9 (1999), 588-598.
  806. B. Petreska, C. Teuscher, A hardware membrane system,  A. Alhazov, C. Martín-Vide and Gh. Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 343-355
  807. B. Popa, Membrane Systems with Limited Parallelism, PhD Thesis, College of Engineering and Science, Louisiana Tech University, Ruston, USA, 2006.
  808. A. Porreca, G. Mauri, C. Zandron, Complexity Classes for Membrane Systems, submitted, 2005.
  809. V.J. Prakash, On the power of tissue P systems working in the maximal-one mode, A. Alhazov, C. Martín-Vide and Gh. Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 356-364
  810. V.J. Prakash, K. Krithivasan, Simulating Boolean Circuits with Tissue P Systems, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 343-359.
  811. V.J. Prakash, M. Madhu, K. Krithivasan, Rewriting tissue P systems, J. of Univ. Computer Science, 10 (9), 1250-1271, Sep 2004.
  812. P. Prakash Mohan, Computing with membranes, Master Project, TU Dresden, Fakultat Informatik, April 2001.
  813. A. Profir, E. Boian, Modeling molecular genetic triggers by means of P systems, A. Alhazov, C. Martín-Vide and Gh. Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 365-386
  814. A. Profir, E. Boian, P systems of biocomputing systems, Pre-Proceedings of Second Workshop on Membrane Computing, Curtea de Arges, Romania, August 2002, 355-370.
  815. A. Profir, E. Boian, N. Barbacari, E. Gutuleac, C. Zelinschi, Modelling Molecular Genetic trigger by Means of P Transducer, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 360-362
  816. A. Profir, E. Gutuleac, E. Boian, Simulation of Continuous-time P Systems using Descriptive Rewriting Timed Petri Nets, in G. Ciobanu, Gh. Paun, Pre-Proc. of First International Workshop on Theory and Application of P Systems, Timisoara, Romania, September 26-27, 2005, 91-94
  817. Y. Pu, Y. Yu, X. Dong, Simulation of biomolecular processes by using stochastic P systems, Workshop on High Performance Computing in the Life Sciences, Ouro Preto, Brasil, October 2006
  818. Z. Qi, C. Fu, D. Shi, J.You, Specification and Execution of P Systems with Symport/Antiport Rules Using Rewriting logic, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 363-371.
  819. Z. Qi, C, Fu, D. Shi, J. You, M. Li, Membrane calculus. A formal method for grid transactions, Proc. 3rd Intern Conf. on Grid and Cooperative Computing, GCC 2004, Wuhan, China, 2004
  820. Z. Qi, R. Rao, G. Xue, J. You, A new formal model based on P systems for mobile transactions, Proc. IEEE Intern. Conf. on Services Computing, SCC2004, 16--22
  821. Z. Qi, J. You, P systems and Petri nets, A. Alhazov, C. Martín-Vide and Gh. Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 387-403.
  822. Z. Qi, C. Fu, D. Shi, J. You, The P system based model for mobile transactions, Fourth Intern. Conf. on Computer and Information Technology, CIT 2004, 534-539.
  823. R. Rama, Computing with P Systems, Pre-proc. Workshop on Multiset Processing, Curtea de Arges, Romania, CDMTCS TR 140, Univ. of Auckland, 2000, 218-235
  824. R. Rama, H. Ramesh, On Generating Trees by P Systems with Active Membranes, in G. Ciobanu, Gh. Paun, Pre-Proc. of First International Workshop on Theory and Application of P Systems, Timisoara, Romania, September 26-27, 2005, 95-98
  825. H. Ramesh, R. Rama, Rewriting P systems with conditional communication: improved hierarchies, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 527-538
  826. D. Ramırez-Martınez, M.A. Gutierrez-Naranjo, A Software Tool for Dealing with Spiking Neural P Systems, in Proceedings of the Fifth Brainstorming Week on Membrane Computing, M.A. Gutierrez-Naranjo, Gh. Paun, A. Romero-Jimenez, A. Riscos-Nunez, (eds.), Sevilla (Spain), January 29th - February 2, 2007, 299-314
  827. A.J. Ramos-Espina, Uso de recursos precomputados en sistemas celulares, Chapter 3 in Modelos de Computacion Molecular, Celular y Cuantica (M.J. Perez-Jimenez, A. Riscos-Nunez, eds.), Fenix Editorial, Sevilla, 2004, 159--241.
  828. A. Riscos Nunez, Cellular Programming: Efficient Resolution of NP-Complete Numerical Problems, PhD Thesis, Universidad de Seville, Seville, Spain, 2004.
  829. A. Rodriguez-Paton, Computing with Membranes: P Systems with DNA-Worms, GECCO, 2001 (poster).
  830. A. Rodriguez-Paton, On the Universality of P Systems with Membrane Creation, Bulletin of the EATCS, 74 (June 2001), 229-234.
  831. A. Rodriguez-Paton, P. Sosik, Membrane computing and complexity theory: a characterization of PSPACE, J. Comput. System Sci. (to appear).
  832. Y. Rogozhin, A. Alhazov, R. Freund, Computational Power of Symport/Antiport: History, Advances and Open Problems, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005, 44-78
  833. V. Rogozhin, E. Boian, Simulation of mobile ambients by P systems. Part 1, A. Alhazov, C. Martín-Vide and Gh. Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 404-427
  834. V. Rogozhin, E. Boian, Simulation of Mobile Ambients by P Systems. Part 2, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 431-442.
  835. V. Rogozhin, E. Boian, Simulation of mobile ambients by tissue P systems with a dynamic network of membranes, ICCC Conf, Oradea, May 2004, 377-382.
  836. Y. Rogozhin, S. Verlan, On the Rule Complexity of Universal Tissue P Systems, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005, 510-516
  837. F.J. Romero-Campero, M. Gheorghe, L. Bianco, D. Pescini, M.J. Perez-Jimenez, R. Ceterchi, Towards Probabilistic Model Checking on P Systems Using PRISM, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 455-473
  838. A. Romero-Jimenez, M.A. Gutierrez-Naranjo, M.J. Perez-Jimenez, Graphical Modelling of Higher Plants Using P Systems, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 474-484
  839. A. Romero-Jimenez, M.A. Gutierrez-Naranjo, M.J. Perez-Jimenez, The Growth of Branching Structures with P Systems, Vol. II of Proc. of the Fourth Brainstorming Week on Membrane Computing, 253-266.
  840. A. Romero-Jimenez, M.J. Perez-Jimenez, Computing partial recursive functions through transition P systems, A. Alhazov, C. Martín-Vide and Gh. Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 428-444
  841. A. Romero-Jimenez, M. Perez-Jimenez, Generation of diophantine sets by computing P systems with external output, Unconventional Models of Computation, LNCS 2509, Springer, 2002, 176-190.
  842. A. Romero-Jimenez, M.J. Perez-Jimenez, Simulating Turing Machines by P Systems with External Output, Fundamenta Informaticae, 49, 1-3 (2002), 273-287.
  843. G. Rozenberg, Selectivity in Molecular Computing, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 64-64.
  844. N. Sabadini, R.F.C. Walters, Hierarchical automata and P systems, Electronic Notes in Theoretical Computer Science, 78 (2003), 1--15.
  845. F. Sancho-Caparrini, A Note on Complexity Measures for Probabilistic P Systems, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 443-448.
  846. F. Sancho-Caparrini, Verification of programs in unconventional computing models, PhD Thesis, Univ. of Sevilla, 2002.
  847. D. Sburlan, Clock-free P Systems, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 372-383.
  848. D. Sburlan, From cells to software architecture. A P system outlook of computational design, Third Workshop on Mathematical Modelling of Environmental and Life Sciences Problems, Constanta, 2004.
  849. D. Sburlan, Further results on P systems with promoters/inhibitors, Proceedings of the Third Brainstorming Week on Membrane Computing, Sevilla (Spain), January 31st - February 4th, 2005, 289-304, and IJFCS, 17, 1(2006), 206-222.
  850. D. Sburlan, Membrane systems with promoters/inhibitors. From computational universality to algorithms, RNGC Report 04/2004, Sevilla University.
  851. D. Sburlan, Modeling the Dynamical Parallelism of Bio-Systems, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005, 517-529
  852. D. Sburlan, New Results on P systems with multiset promoted/inhibited rules, Bull. PAMM, 2164 (2004), 45--54.
  853. D. Sburlan, Non-cooperative P Systems with Priorities Characterize PsET0L, in R. Freund, G. Lojka, M. Oswald, Gh. Paun, Pre-Proc. of Sixth International Workshop on Membrane Computing (WMC6), Vienna, June 18-21, 2005, 530-539
  854. D. Sburlan, Promoting and Inhibiting Contexts in Membrane Computing, PhD Thesis, Univ. Sevilla, 2006
  855. J.M. Sempere, Complexity applications of covering rules in P systems, Recent Results in Natural Computing (M.J. Perez-Jimenez, A. Romero-Jimenez, F. Sancho-Caparrini, eds), Univ. Sevilla, 2004, 277--291.
  856. J.M. Sempere, Covering Reductions and Degrees in P Systems, Pre-proceedings of the Fifth Workshop on Membrane Computing (WMC5), Milano, Italy, June 2004, 384-391.
  857. J.M. Sempere, Covering Rules in P Systems: Some Preliminary Ideas, Dept. of Computer Sciences and Artificial Intelligence, Univ. of Sevilla Tech. Rep 01/2004, Gh. Paun, A. Riscos-Nunez, A. Romero-Jimenez, F. Sancho Caparrini (Eds.), Second Brainstorming Week on Membrane Computing,  Sevilla, Spain, Feb 2-7, 2004, 449-456.
  858. J.M. Sempere, P systems with external input and learning strategies, A. Alhazov, C. Martín-Vide and Gh. Paun (Editors): Preproceedings of the Workshop on Membrane Computing; Tarragona, July 17-22 2003, 445-448
  859. J.M. Sempere, D. Lopez, Characterizing membrane structures through multiset tree automata, Pre-proceedings of Membrane Computing, International Workshop - WMC8, Thessaloniki, Greece, 2007, 539-550
  860. J.M. Sempere, D. Lopez, On Two Families of Multiset Tree Automata, in Proceedings of the Fifth Brainstorming Week on Membrane Computing, M.A. Gutierrez-Naranjo, Gh. Paun, A. Romero-Jimenez, A. Riscos-Nunez, (eds.), Sevilla (Spain), January 29th - February 2, 2007, 315-325
  861. J.M. Sempere, D. Lopez, Identifying P Rules from Membrane Structures with an Error-Correcting Approach, Pre-proceedings of Membrane Computing, International Workshop, WMC7, Leiden, The Netherlands, 2006, 485-500
  862. J.M. Sempere, D. López, Recognizing membrane structures with tree automata, Proceedings of the Third Brainstorming Week on Membrane Computing, Sevilla (Spain), January 31st - February 4th, 2005, 305-316
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