@article {,
	title = {Membrane Systems with Marked Membranes},
	journal = {Workshop on Membrane Computing and Biologically Inspired Process Calculi},
	year = {2006},
	month = {July 9},
	address = {Venecia, Italia},
	author = {Robert Brijder and Matteo Cavaliere and Agust{\'\i}n Riscos-N{\'u}{\~n}ez and Grzegorz Rozenberg and Dragos Sburlan},
	editor = {Nadia Busi and Claudio Zandron}
}
