- On PCGS and FRR-automata2008 | Faculty of Mathematics and Physics
- A Two-Dimensional Taxonomy of Proper Languages of Lexicalized FRR-Automata +12008 | Faculty of Mathematics and Physics
- Two-dimensional hierarchies of proper languages of lexicalized FRR-automata2009 | Faculty of Mathematics and Physics
- Parallel communicating grammar systems with regular control and skeleton preserving FRR automata2011 | Faculty of Mathematics and Physics
- Degrees of monotonicity and Marcus t-contextual grammars +12005 | Faculty of Mathematics and Physics
- Formal Translations, Parallel Communicating Grammar Systems and Restarting Automata2008 | Faculty of Mathematics and Physics
- On Parallel Communicating Grammar Systems and Correctness Preserving Restarting Automata2009 | Faculty of Mathematics and Physics