@article {1298,
	title = {P vs NP},
	journal = {Monograf{\'\i}as de la Real Academia de Ciencias de Zaragoza},
	volume = {26},
	year = {2004},
	pages = {57-68},
	url = {http://webdiis.unizar.es/~elvira/research.html},
	author = {E. Mayordomo}
}

