@book{13986,
	author = {HAWKING, STEPHEN. and STONE, GENE, PREP.},
	title = {BREVE HISTORIA DEL TIEMPO : },
	publisher = {PLANETA},
	year = {1993},
	address = {MEXICO: },
	edition = {1},
	note = {TITULO ORIGINAL : A BRIEF HISTORY OF TIME : A READER'S COMPANION}
}