@article {985,
	title = {Seeking sharper frontiers of efficiency in tissue P systems},
	journal = {International Journal of Foundations of Computer Science},
	volume = {24},
	year = {2013},
	month = {08/2013},
	pages = {577-579},
	publisher = {World Scientific},
	address = {London, U.K.},
	issn = {0129-0541},
	doi = {10.1142/S0129054113500202},
	url = {http://www.worldscientific.com/doi/abs/10.1142/S0129054113500202},
	author = {Mario J. P{\'e}rez-Jim{\'e}nez and Agust{\'\i}n Riscos-N{\'u}{\~n}ez and Miquel Rius-Font and {\'A}lvaro Romero-Jim{\'e}nez}
}
