@article {990,
	title = {The relevance of the environment on the efficiency of tissue P systems},
	journal = {14th International Conference on Membrane Computing},
	year = {2013},
	pages = {283-295},
	publisher = {http://www.math.md/cmc14/},
	author = {Mario J. P{\'e}rez-Jim{\'e}nez and Agust{\'\i}n Riscos-N{\'u}{\~n}ez and Miquel Rius-Font and Luis Valencia-Cabrera},
	editor = {Artiom Alhazov and S. Cojocaru and Marian Gheorghe and Yurii Rogozhin}
}
