1. Technical Report;A. Alhazov,2003
2. LNCS;G. Bel-Enguix,2003
3. LNCS;G. Bel-Enguix,2004
4. Technical Report,2003
5. L. Cienciala, L. Ciencialova: P Automata with Priorities. In Pre-Proceedings of the 4th Workshop on Membrane Computing, WMC2003, Tarragona, Spain, July 2003 (A. Alhazov, C. Martín-Vide, Gh. Păun, eds.), Technical Report 28/03, URV Tarragona, 2003, 161–168.