@inbook{Dersanambika:Hexagonal_contextual:2006,
	author={K.S. Dersanambika and K. Krithivasan and H.K. Agarwal and J. Gupta},
	title={Hexagonal contextual array {P} systems},
	publisher={World Scientific},
	address={Singapore},
	booktitle={Formal Models, Languages and Applications},
	editor={K.G. Subramanian, K. Rangarajan, M. Mukund }
}

@inbook{Gutierrez-Naranjo:Characterizing_tractability:2006,
  author       = {M.A. Guti{\'e}rrez-Naranjo and M.J. P{\'e}rez-Jim{\'e}nez and A. Riscos-Nunez and F.J. Romero-Campero and A. Romero-Jim{\'e}nez},
  title        = {Characterizing tractability by cell-like membrane systems},
  publisher    = {World Scientific},
  address      = {Singapore},
  booktitle    = {Formal Models, Languages and Applications},
  editor       = {K.G. Subramanian, K. Rangarajan, M. Mukund },
}

@inbook{Paun:Where_Mathematics:On_Membrane:2000,
	author={Andrei P{\u a}un and Mihaela P{\u a}un},
	title={On Membrane Computing Based on Splicing},
	chapter={36},
	year={2000},
	month={November},
	publisher={Kluwer Academic Publishers, Dordrecht Hardbound},
	pages={409--422},
	address={Dordrecht},
	booktitle={Where Mathematics, Computer Science, Linguistics, and Biology Meet},
	editor={Carlos Mart{\'i}n-Vide and Victor Mitrana }
}

@inbook{Calude:Computing_with:Computing_with:2000,
	author={Cristian S. Calude and Gheorghe P{\u a}un},
	title={Computing with Membranes},
	chapter={3},
	year={2000},
	publisher={Taylor and Francis},
	address={London},
	booktitle={Computing with Cells and Atoms}
}

@inbook{Suzuki:Recent_Topics_in:Investigation_of_an:2000,
	author={Yasuhiro Suzuki and Junji Takabayashi and Hiroshi Tanaka},
	title={Investigation of an Ecological System by Using an Abstract Rewriting System
		on Multisets},
	year={2000},
	month={August},
	publisher={Editura Academiei Romane},
	pages={300--309},
	address={Bucharest},
	booktitle={Recent Topics in Mathematical & Computational Linguistics. Papers in Honor
		of Solomon Marcus on the Occasion of his 75th Birthday},
	editor={Carlos Martin-Vide and Gheorghe P{\u a}un }
}

@inbook{Ito:Words_Semigroups_and:A_characterization_of:01,
	author={Masami Ito and Carlos Mart{\'i}n-Vide and Gheorghe P{\u a}un},
	title={A characterization of {Parikh} sets of {ET0L} languages in terms of {P}
		systems},
	year={2001},
	publisher={World Scientific},
	pages={239--254},
	address={Singapore},
	booktitle={Words, Semigroups, and Transductions: Essays in Honour of Gabriel Thierrin,
		on the Occasion of His 80th Birthday},
	editor={Masami Ito and Gheorghe P{\u a}un and Sheng Yu }
}

@inbook{Mauri:Membrane_Systems_for:Emergence_in_Complex:02,
	author={Giancarlo Mauri and Claudio Zandron},
	title={Membrane Systems for Computing},
	year={2002},
	month={July},
	publisher={Kluwer Academic/Plenum Publishers Hardbound},
	pages={213--232},
	address={New York},
	booktitle={Emergence in Complex, Cognitive, Social, and Biological Systems},
	editor={G. Minati and E. Pessa }
}

@inbook{Cienciala:Kognice_a_umely:Zivot_ve_svete:2002,
	author={Ludek Cienciala and Alica Kelemenova},
	title={Zivot ve svete symbolu: pocitani pomoci membran},
	year={2002},
	publisher={Slezska Univ.},
	address={Opava},
	note={in vol "Kognice a umely zivot II"},
	booktitle={Kognice a umely zivot II},
	editor={Jozef Kelemen and V. Kvasnicka }
}

@inbook{Sosik:Kognice_a:Membranove_vypocty:2002,
	author={Petr Sosik and Jiri Matysek},
	title={Membranove vypocty: komunikace versus reakce},
	year={2002},
	publisher={Slezska Univ.},
	pages={233--244},
	address={Opava},
	note={in vol "Kognice a umely zivot II"},
	booktitle={Kognice a umely zivot II},
	editor={Jozef Kelemen and V. Kvasnicka }
}

@inbook{Ramos-Espina:Recursos_precomputados:2004,
	author={Antonio Jesus Ramos-Espina},
	title={Uso de recursos precomputados en sistemas celulares},
	chapter={3},
	year={2004},
	publisher={Fenix Editorial},
	pages={159--241},
	address={Sevilla},
	booktitle={Modelos de Computacion Molecular, Celular y Cuantica},
	editor={Mario Jes{\'u}s Perez-Jimenez and Agust{\'i}n Riscos-Nunez }
}

@inbook{Alhazov:Aspects_of_MC:Solving_Graph_Problems:2004,
	author={Artiom Alhazov and Carlos Mart{\'i}n-Vide and Linqiang Pan},
	title={Solving Graph Problems by {P} systems with Restricted Elementary Active
		Membranes},
	year={2004},
	publisher={Springer},
	pages={1--22},
	volume={2950},
	series={Lecture Notes in Computer Science},
	booktitle={Aspects of Molecular Computing - Essays dedicated to Tom Head on the occasion
		of his 70th birthday},
	editor={Nata{\u s}a Jonoska and Gheorghe P{\u a}un and Grzegorz Rozenberg }
}

@inbook{Martin:MC_Results_problems:2004,
	author={Carlos Mart{\'i}n-Vide and Andrei P{\u a}un and Gheorghe P{\u a}un},
	title={Membrane Computing: New Results, New Problems},
	year={2004},
	publisher={World Scientific Publishing Co. Pte. Ltd},
	pages={613--623},
	booktitle={Current Trends in Theoretical Computer Science. The challenge of the new
		century. Vol 2. Formal Models and Semantics},
	editor={Gheorghe P{\u a}un and Grzegorz Rozenberg and Arto Salomaa }
}

@inbook{Martin-Vide:MMB:Symport_Antiport_Syrvey:2004,
	author={Carlos Mart{\'i}n-Vide and Gheorghe P{\u a}un},
	title={{P} systems with Symport/Antiport Rules. A Survey},
	year={2004},
	publisher={Springer},
	pages={175--192},
	series={Natural Computing Series},
	booktitle={Modelling in Molecular Biology},
	editor={Gabriel Ciobanu and Grzegorz Rozenberg }
}

@inbook{Martin:Language_generating:2004,
	author={Carlos Mart{\'i}n-Vide and Gheorghe P{\u a}un},
	title={Language generating by means of Membrene Systems},
	year={2004},
	publisher={World Scientific Publishing Co. Pte. Ltd},
	pages={599--611},
	booktitle={Current Trends in Theoretical Computer Science. The challenge of the new
		century. Vol 2. Formal Models and Semantics},
	editor={Gheorghe P{\u a}un and Grzegorz Rozenberg and Arto Salomaa }
}

@inbook{Besozzi:A_survey_of_latest:2004,
	author={Daniela Besozzi and Giancarlo Mauri and Claudio Zandron},
	title={A survey of latest results on {P} systems with deadlock},
	year={2004},
	publisher={Kronos Editorial},
	pages={17--46},
	address={Sevilla},
	note={To appear},
	booktitle={Recent Results in Natural Computing},
	editor={Mario J. P{\'e}rez-Jim{\'e}nez and Alvaro Romero-Jimenez and Fernando Sancho-Caparrini
		}

@inbook{Bernardini:Aspects_of_MC:Eilenberg:2004,
	author={Francesco Bernardini and Marian Gheorghe and Mike Holcombe},
	title={Eilenberg {P} systems with Symbol-Objects},
	year={2004},
	publisher={Springer},
	pages={49--60},
	volume={2950},
	series={Lecture Notes in Computer Science},
	booktitle={Aspects of Molecular Computing - Essays dedicated to Tom Head on the occasion
		of his 70th birthday},
	editor={Nata{\u s}a Jonoska and Gheorghe P{\u a}un and Grzegorz Rozenberg }
}

@inbook{Freund:Aspects_of_MC:Splicing:2004,
	author={Franziska Freund and Rudolf Freund and Marion Oswald},
	title={Splicing Test Tube Systems and Their Relation to Splicing Membrane Systems},
	year={2004},
	publisher={Springer},
	pages={139--151},
	volume={2950},
	series={Lecture Notes in Computer Science},
	booktitle={Aspects of Molecular Computing - Essays dedicated to Tom Head on the occasion
		of his 70th birthday},
	editor={Nata{\u s}a Jonoska and Gheorghe P{\u a}un and Grzegorz Rozenberg }
}

@inbook{Paun:Membrane_computing_Main_ideas:2004,
	author={Gheorghe P{\u a}un},
	title={Membrane computing: Main ideas, basic results, applications},
	year={2004},
	publisher={Idea Group Publ.},
	address={London},
	booktitle={Molecular Computational Models: Unconventional Approaches},
	editor={Marian Gheorghe }
}

@inbook{Paun:Aspects_of_MC:Non_standard:2004,
	author={Gheorghe P{\u a}un},
	title={Membrane Computing: Some Non-standard Ideas},
	year={2004},
	publisher={Springer},
	pages={322--337},
	volume={2950},
	series={Lecture Notes in Computer Science},
	booktitle={Aspects of Molecular Computing - Essays dedicated to Tom Head on the occasion
		of his 70th birthday},
	editor={Nata{\u s}a Jonoska and Gheorghe P{\u a}un and Grzegorz Rozenberg }
}

@inbook{Paun:Membrane_Computing_Some_Recent:2004,
	author={Gheorghe P{\u a}un},
	title={Membrane computing. {S}ome recent results and current research topics},
	year={2004},
	publisher={Kronos Editorial},
	address={Sevilla},
	booktitle={Recent Results in Natural Computing},
	editor={Mario J. P{\'e}rez-Jim{\'e}nez and Alvaro Romero-Jim{\'e}nez and Fernando Sancho-Caparrini
		}

@inbook{Sempere:Complexity_applications:2004,
	author={Jos{\'e} M. Sempere},
	title={Complexity applications of covering rules in {P} systems},
	year={2004},
	publisher={Kronos Editorial},
	pages={277--291},
	address={Sevilla},
	note={To appear},
	booktitle={Recent Results in Natural Computing},
	editor={Mario J. P{\'e}rez-Jim{\'e}nez and Alvaro Romero-Jimenez and Fernando Sancho-Caparrini
		}

@inbook{Kari:Aspects_of_MC:minimal_symport:2004,
	author={Lila Kari and Carlos Mart{\'i}n-Vide and Andrei P{\u a}un},
	title={On the Universality of {P} systems with Minimal Symport/Antiport Rules},
	year={2004},
	publisher={Springer},
	pages={254--265},
	volume={2950},
	series={Lecture Notes in Computer Science},
	booktitle={Aspects of Molecular Computing - Essays dedicated to Tom Head on the occasion
		of his 70th birthday},
	editor={Nata{\u s}a Jonoska and Gheorghe P{\u a}un and Grzegorz Rozenberg }
}

@inbook{PerezJ:Aspects_of_MC:P_versus_MP:2004,
	author={Mario J. P{\'e}rez-Jim{\'e}nez and Alvaro Romero-Jim{\'e}nez and Fernando Sancho-Caparrini},
	title={The {P} versus {NP} problem through cellular computing with membranes},
	year={2004},
	publisher={Springer},
	pages={338--352},
	volume={2950},
	series={Lecture Notes in Computer Science},
	booktitle={Aspects of Molecular Computing - Essays dedicated to Tom Head on the occasion
		of his 70th birthday},
	editor={Nata{\u s}a Jonoska and Gheorghe P{\u a}un and Grzegorz Rozenberg }
}

@inbook{Perez-Jimenez:MC_as_production_systems:2004,
	author={Mario J. P{\'e}rez-Jim{\'e}nez and Francisco Jos{\'e} Romero-Campero},
	title={Membrane computing as production systems},
	year={2004},
	publisher={Kronos Editorial},
	pages={167--204},
	address={Sevilla},
	note={To appear},
	booktitle={Recent Results in Natural Computing},
	editor={Mario J. P{\'e}rez-Jim{\'e}nez and Alvaro Romero-Jimenez and Fernando Sancho-Caparrini
		}

@inbook{Georgiu:MBDinCom_Graphics:App_of_MC:2005,
	author={Alexandros Georgiou and Marian Gheorghe and Francesco Bernardini},
	title={Membrane Based Devices Used in Computer Graphics},
	year={2005},
	publisher={Springer-Verlag},
	pages={253--280},
	booktitle={Applications of Membrane Computing},
	editor={Gabriel Ciobanu and Gheorghe P{\u a}un and Mario J. P{\'e}rez-Jim{\'e}nez }
}

@inbook{Alhazov:Static_Sorting_P_Sys:App_of_MC:2005,
	author={Artion Alhazov and Dragos Sburlan},
	title={Static Sorting {P} Systems},
	year={2005},
	publisher={Springer-Verlag},
	pages={215--252},
	booktitle={Applications of Membrane Computing},
	editor={Gabriel Ciobanu and Gheorghe P{\u a}un and Mario J. P{\'e}rez-Jim{\'e}nez }
}

@inbook{Ciobanu:Cell_Mediating_immunity:App_of_MC:2005,
	author={Gabriel Ciobanu},
	title={Modeling Cell--Mediated Immunity by Means of {P} Systems},
	year={2005},
	publisher={Springer-Verlag},
	pages={157--178},
	booktitle={Applications of Membrane Computing},
	editor={Gabriel Ciobanu and Gheorghe P{\u a}un and Mario J. P{\'e}rez-Jim{\'e}nez }
}

@inbook{Ardelean:PS_Mechanosensitive_Channels:2005,
	author={Ioan I. Ardelean and Daniela Besozzi and M.H. Garzon and Giancarlo Mauri
		and S. Roy},
	title={P System Models for Mechanosensitive Channels},
	year={2005},
	publisher={Springer-Verlag},
	pages={43--80},
	booktitle={Applications of Membrane Computing},
	editor={Gabriel Ciobanu and Gheorghe P{\u a}un and Mario J. P{\'e}rez-Jim{\'e}nez }
}

@inbook{Gutierrez:MC_Software:App_of_MC:2005,
	author={Miguel Angel Gutierrez-Naranjo and Mario J. P{\'e}rez-Jim{\'e}nez and Agust{\'i}n Riscos-Nu{\~n}ez},
	title={Available Membrane Computing Software},
	year={2005},
	publisher={Springer-Verlag},
	pages={411--438},
	booktitle={Applications of Membrane Computing},
	editor={Gabriel Ciobanu and Gheorghe P{\u a}un and Mario J. P{\'e}rez-Jim{\'e}nez }
}

@inbook{Michel:Analysis_Public_Key_Protocol:App_of_MC:2005,
	author={Olivier Michel and Florent Jacquemard},
	title={An Analysis of a Public--Key Protocol with Membranes},
	year={2005},
	publisher={Springer-Verlag},
	pages={281--300},
	booktitle={Applications of Membrane Computing},
	editor={Gabriel Ciobanu and Gheorghe P{\u a}un and Mario J. P{\'e}rez-Jim{\'e}nez }
}

@inbook{Gramatovici:Parsing_with_P_Automata:App_of_MC:2005,
	author={Radu Gramatovici and Gemma Bel-Enguix},
	title={Parsing with {P} Automata},
	year={2005},
	publisher={Springer-Verlag},
	pages={389--412},
	booktitle={Applications of Membrane Computing},
	editor={Gabriel Ciobanu and Gheorghe P{\u a}un and Mario J. P{\'e}rez-Jim{\'e}nez }
}

@inbook{Nishida:MCModelPhotosynthesis:App_of_MC:2005,
	author={Taishin Yasunobu Nishida},
	title={A Membrane Computing Model of Photosynthesis},
	year={2005},
	publisher={Springer-Verlag},
	pages={179--200},
	booktitle={Applications of Membrane Computing},
	editor={Gabriel Ciobanu and Gheorghe P{\u a}un and Mario J. P{\'e}rez-Jim{\'e}nez }
}

@inbook{Yasunobu:NP_Complete_Opt:App_of_MC:2005,
	author={Taishin Yasunobu Nishida},
	title={Membrane Algorithms: Approximate Algorithms for NP-Complete Optimization
		Problems},
	year={2005},
	publisher={Springer-Verlag},
	pages={301--312},
	booktitle={Applications of Membrane Computing},
	editor={Gabriel Ciobanu and Gheorghe P{\u a}un and Mario J. P{\'e}rez-Jim{\'e}nez }
}

@inbook{Suzuki:p53Signaing:App_of_MC:2005,
	author={Yasuhiro Suzuki and Hiroshi Tanaka},
	title={Modeling p53 Signaling Pathways by Using Multiset Processing},
	year={2005},
	publisher={Springer-Verlag},
	pages={201--214},
	booktitle={Applications of Membrane Computing},
	editor={Gabriel Ciobanu and Gheorghe P{\u a}un and Mario J. P{\'e}rez-Jim{\'e}nez }
}

@inbook{Lakshmanan:computational_efficiency:2006,
	author={K. Lakshmanan and R. Rama},
	title={The computational efficiency of insertion deletion tissue {P} systems},
	year={2006},
	publisher={World Scientific},
	address={Singapore},
	booktitle={Formal Models, Languages and Applications},
	editor={K.G. Subramanian, K. Rangarajan, M. Mukund }
}

@inbook{Krishna:Towards_reducing_parallelism:2006,
	author={S.N. Krishna and R. Rama},
	title={Towards reducing parallelism in {P} systems},
	year={2006},
	publisher={World Scientific},
	address={Singapore},
	booktitle={Formal Models, Languages and Applications},
	editor={K.G. Subramanian, K. Rangarajan, M. Mukund }
}