| 2024 | MCU | Universality of Turing Tumble of Finite Size. | Artiom Alhazov, Rudolf Freund, Sergiu Ivanov, Sergey Verlan |
| 2022 | MCU | Prescribed Teams of Rules Working on Several Objects. | Artiom Alhazov, Rudolf Freund, Sergiu Ivanov, Sergey Verlan |
| 2018 | MCU | Sequential Grammars with Activation and Blocking of Rules. | Artiom Alhazov, Rudolf Freund, Sergiu Ivanov |
| 2018 | MCU | Control Mechanisms for Array Grammars on Cayley Grids. | Rudolf Freund |
| 2018 | UC | P Systems with Activation and Blocking of Rules. | Artiom Alhazov, Rudolf Freund, Sergiu Ivanov |
| 2015 | MCU | A Connection Between Red-Green Turing Machines and Watson-Crick T0L Systems. | Erzsbet Csuhaj-Varj, Rudolf Freund, Gyrgy Vaszil |
| 2015 | MCU | Non-isometric Contextual Array Grammars with Regular Control and Local Selectors. | Henning Fernau, Rudolf Freund, Rani Siromoney, K. G. Subramanian |
| 2015 | UC | Going Beyond Turing with P Automata: Partial Adult Halting and Regular Observer ω-Languages. | Rudolf Freund, Sergiu Ivanov, Ludwig Staiger |
| 2014 | UC | Five Nodes Are Sufficient for Hybrid Networks of Evolutionary Processors to Be Computationally Complete. | Artiom Alhazov, Rudolf Freund, Yurii Rogozhin |
| 2013 | UC | Array Insertion and Deletion P Systems. | Henning Fernau, Rudolf Freund, Sergiu Ivanov, Markus L. Schmid, K. G. Subramanian |
| 2012 | UC | P Systems with Minimal Left and Right Insertion and Deletion. | Rudolf Freund, Yurii Rogozhin, Sergey Verlan |
| 2010 | UC | Reversibility and Determinism in Sequential Multiset Rewriting. | Artiom Alhazov, Rudolf Freund, Kenichi Morita |
| 2007 | MCU | Partial Halting in P Systems Using Membrane Rules with Permitting Contexts. | Artiom Alhazov, Rudolf Freund, Marion Oswald, Sergey Verlan |
| 2007 | UC | Polarizationless P Systems with Active Membranes Working in the Minimally Parallel Mode. | Rudolf Freund, Gheorghe Paun, Mario J. Prez-Jimnez |
| 2005 | DLT | Tissue P Systems with Antiport Rules and Small Numbers of Symbols and Cells. | Artiom Alhazov, Rudolf Freund, Marion Oswald |
| 2005 | SYNASC | One and Two Polarizations, Membrane Creation and Objects Complexity in P Systems. | Artiom Alhazov, Rudolf Freund, Agustin Riscos-Nez |
| 2005 | SYNASC | P Colonies Working in the Maximally Parallel and in the Sequential Mode. | Rudolf Freund, Marion Oswald |
| 2004 | DLT | P Systems Working in the Sequential Mode on Arrays and Strings. | Rudolf Freund |
| 2004 | MCU | Computational Completeness of P Systems with Active Membranes and Two Polarizations. | Artiom Alhazov, Rudolf Freund, Gheorghe Paun |
| 2004 | MCU | Sequential P Systems with Unit Rules and Energy Assigned to Membranes. | Rudolf Freund, Alberto Leporati, Marion Oswald, Claudio Zandron |
| 2003 | DLT | On Three Classes of Automata-Like P Systems. | Rudolf Freund, Carlos Martn-Vide, Adam Obtulowicz, Gheorghe Paun |
| 2001 | DLT | String Rewriting Sequential P-Systems and Regulated Rewriting. | Petr Sosk, Rudolf Freund |
| 2001 | MCU | On the Number of Non-terminal Symbols in Graph-Controlled, Programmed and Matrix Grammars. | Rudolf Freund, Gheorghe Paun |
| 2000 | DNA | Molecular Computing with Generalized Homogeneous P-Systems. | Rudolf Freund, Franziska Freund |
| 2000 | SSPR | A Hybrid System for the Recognition of Hand-Written Characters. | Rudolf Freund, Markus Neubauer, Martin Summerer, Stefan Gruber, Jrgen Schaffer, Roland Swoboda |
| 1999 | DLT | Test tube systems: when two tubes are enough. | Rudolf Freund, Franziska Freund |
| 1999 | FCT | Generalized P-Systems. | Rudolf Freund |
| 1998 | COMPSAC | Formal Specification and Simulation of Software through Graph Grammars: A General but Minimal Approach. | Rudolf Freund, Christian Stary, Herbert Ptzl, Tatjana Svizensky |
| 1998 | MCU | The Generative Power of | Henning Fernau, Rudolf Freund, Markus Holzer |
| 1998 | MFCS | Array Grammar Systems. | Rudolf Freund |
| 1998 | SSPR | Character Recognition with | Henning Fernau, Rudolf Freund, Markus Holzer |
| 1997 | DLT | Bounding resources in Cooperating Distributed Grammar Systems. | Henning Fernau, Markus Holzer, Rudolf Freund |
| 1997 | ICEC | Test tube systems with controlled applications of rules. | Rudolf Freund, Franziska Freund |
| 1996 | SSPR | Bounded Parallelism in Array Grammars Used for Character Recognition. | Henning Fernau, Rudolf Freund |
| 1995 | DLT | Array Grammars with Prescribed Teams of Array Productions. | Rudolf Freund |
| 1993 | DLT | Aspects of N-Dimensional Lindenmayer Systems. | Rudolf Freund |
| 1993 | SEKE | How Semantical Design Languages Help to Preserve Specification/Design-Consistency. | Christian Stary, Rudolf Freund |
| 1992 | ICCI | Applying Graph Grammars for Task-Oriented User Interface Development. | Rudolf Freund, Brigitte Haberstroh, Christian Stary |
| 1991 | WG | Attributed Elementary Programmed Graph Grammars. | Rudolf Freund, Brigitte Haberstroh |