@article {237,
	title = {Two Universality Results for (Mem)brane Systems},
	journal = {Fourth Brainstorming Week on Membrane Computing },
	volume = {I},
	year = {2006},
	month = {1/30/06-2/3/06},
	pages = {49-62},
	publisher = {F{\'e}nix Editora},
	address = {Sevilla, Espa{\~n}a},
	isbn = {84-611-0520-6},
	author = {Daniela Besozzi and Nadia Busi and Giuditta Franco and Rudolf Freund and Gheorghe Paun},
	editor = {Miguel A. Guti{\'e}rrez-Naranjo}
}
