@article {,
	title = {Multidimensional descriptional complexity of P systems},
	journal = {Journal of Automata, Languages and Combinatorics},
	volume = {12},
	year = {2007},
	pages = {167-179},
	issn = {1430-189X},
	url = {http://jalc.de/search/j00_a.html},
	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}
}
