R. Freund, A. Alhazov:
"Asynchronous and maximally parallel deterministic controlled non-cooperative P systems characterize NFIN and coNFIN";
in: "Membrane computing. 13th international conference, CMC 2012, Budapest, Hungary, August 28--31, 2012", M. Gheorghe et al. (ed.); Springer LNCS, Heidelberg, 2013, ISBN: 978-3-642-36750-2, 101 - 111.