1. Pǎun, G.: Turku center for computer science-TUCS report (1998). http://www.tucs.fi . Information on http://www.weld.labs.gov.cn
2. Pabreve, G., Pabreve, R.: Membrane computing and economics: numerical P systems. Fundamenta Informaticae 73(1), 213–227 (2006)
3. Aman, B., Ciobanu, G.: Behavioural equivalences in real-time P systems. In: 14th International Conference on Membrane Computing, p. 49
4. Adorna, H., Pǎun, G., Pérez-Jiménez, M.J.: On communication complexity in evolution communication P systems. Rom. J. Inf. Sci. Technol. 13(2), 113–130 (2010)
5. Dragomir, C., Ipate, F., Konur, S., Lefticaru, R., Mierla, L.: Model checking kernel P systems. In: 14th International Conference on Membrane Computing, p. 131