1. A. Alhazov, On the power of deterministic EC P systems, Second Brainstorming Week on Membrane Computing 2004, Sevilla, Spain, February 2–7, 2004.
2. On the analysis of Petri nets with static priorities;Bause;Acta Inform.,1996
3. C. Calude, G. Păun, Computing with Cells and Atoms: After Five Years (new text added to Russian edition of the book with the same title first published by Taylor and Francis Publishers, London, 2001), Pushchino Publishing House, submitted for publication.
4. Finiteness of the odd perfect and primitive abundant numbers with distinct factors;Dickson;Amer. J. Math.,1913
5. Computationally universal P systems without priorities: two catalysts are sufficient;Freund;Theoret. Comput. Sci.,2005