@article {,
	title = {Characterizing Tractability with Membrane Creation},
	journal = {TAPS{\textquoteright}05 Workshop on Theory and Application of Systems},
	year = {2005},
	pages = {61-68},
	address = {Timisoara, Ruman{\'\i}a},
	author = {Miguel A. Guti{\'e}rrez-Naranjo and Mario J. P{\'e}rez-Jim{\'e}nez and Agust{\'\i}n Riscos-N{\'u}{\~n}ez and Francisco J. Romero-Campero},
	editor = {Gabriel Ciobanu and Gheorghe Paun}
}
