70. Birthday: Tom Head, 2004

• Artiom Alhazov, Carlos Martín-Vide, Linqiang Pan:
  Solving Graph Problems by P Systems with Restricted Elementary Active Membranes. 1-22
  
• Masanori Arita:
  Writing Information into DNA. 23-35
  
• Joshua J. Arulanandham, Cristian Calude, Michael J. Dinneen:
  Balance Machines: Computing = Balancing. 36-48
  
• Francesco Bernardini, Marian Gheorghe, Mike Holcombe:
  Eilenberg P Systems with Symbol-Objects. 49-60
  
• Alessandra Carbone, Nadrian C. Seeman:
  Molecular Tiling and DNA Self-assembly. 61-83
  
• Rodica Ceterchi, Carlos Martín-Vide, K. G. Subramanian:
  On Some Classes of Splicing Languages. 84-105
  
• Erzsébet Csuhaj-Varjú, Arto Salomaa:
  The Power of Networks of Watson-Crick D0L Systems. 106-118
  
• Karel Culik II, Juhani Karhumäki, Petri Salmela:
  Fixed Point Approach to Commutation of Languages. 119-131
  
• Claudio Ferretti, Giancarlo Mauri:
  Remarks on Relativisations and DNA Encodings. 132-138
  
• Franziska Freund, Rudolf Freund, Marion Oswald:
  Splicing Test Tube Systems and Their Relation to Splicing Membrane Systems. 139-151
  
• Max H. Garzon, Kiranchand V. Bobba, Bryan P. Hyde:
  Digital Information Encoding on DNA. 152-166
  
• Ashish Gehani, Thomas H. LaBean, John H. Reif:
  DNA-based Cryptography. 167-188
  
• Elizabeth Goode, Dennis Pixton:
  Splicing to the Limit. 189-201
  
• Tero Harju, Ion Petre, Grzegorz Rozenberg:
  Formal Properties of Gene Assembly: Equivalence Problem for Overlap Graphs. 202-212
  
• Masami Ito, Ryo Sugiura:
  n-Insertion on Languages. 213-218
  
• Natasa Jonoska, Shiping Liao, Nadrian C. Seeman:
  Transducers with Programmable Input by DNA Self-assembly. 219-240
  
• Natasa Jonoska, Kalpana Mahalingam:
  Methods for Constructing Coded DNA Languages. 241-253
  
• Lila Kari, Carlos Martín-Vide, Andrei Paun:
  On the Universality of P Systems with Minimal Symport/Antiport Rules. 254-265
  
• Satoshi Kobayashi, Takashi Yokomori, Yasubumi Sakakibara:
  An Algorithm for Testing Structure Freeness of Biomolecular Sequences. 266-277
  
• Manfred Kudlek:
  On Languages of Cyclic Words. 278-288
  
• Lucas Ledesma, Juan Pazos, Alfonso Rodríguez-Patón:
  A DNA Algorithm for the Hamiltonian Path Problem Using Microfluidic Systems. 289-296
  
• Peter Leupold, Victor Mitrana, José M. Sempere:
  Formal Languages Arising from Gene Repeated Duplication. 297-308
  
• Vincenzo Manca:
  A Proof of Regularity for Finite Splicing. 309-317
  
• Solomon Marcus:
  The Duality of Patterning in Molecular Genetics. 318-321
  
• Gheorghe Paun:
  Membrane Computing: Some Non-standard Ideas. 322-337
  
• Mario J. Pérez-Jiménez, Álvaro Romero Jiménez, Fernando Sancho-Caparrini:
  The P Versus NP Problem Through Cellular Computing with Membranes. 338-352
  
• M. Sakthi Balan, Kamala Krithivasan:
  Realizing Switching Functions Using Peptide-Antibody Interactions. 353-360
  
• Rani Siromoney, Bireswar Das:
  Plasmids to Solve #3SAT. 361-366
  
• Sergey Verlan:
  Communicating Distributed H Systems with Alternating Filters. 367-384