@proceedings {2175,
	title = {Counting Membrane Systems},
	journal = {Eighteenth International Conference on Membrane Computing (CMC18)},
	year = {2017},
	pages = {359-372},
	author = {Luis Valencia-Cabrera and David Orellana-Mart{\'\i}n and Agust{\'\i}n Riscos-N{\'u}{\~n}ez and Mario J. P{\'e}rez-Jim{\'e}nez}
}
