@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} }