%0 Generic %D 2006 %T Two Universality Results for (Mem)brane Systems %A Daniela Besozzi %A Nadia Busi %A Giuditta Franco %A Rudolf Freund %A Gheorghe Paun %E Miguel A. Gutiérrez-Naranjo %C Sevilla, España %I Fénix Editora %P 49-62 %S Fourth Brainstorming Week on Membrane Computing %V I %8 1/30/06-2/3/06 %@ 84-611-0520-6