@book{81059,
	author = {Hofstadter, Douglas R. and Usabiaga, Mario A.},
	title = {Gödel, Escher, Bach },
	publisher = {Tusquets, },
	year = {1987.},
	series = {Matemas. Superínfimos ; },
	address = {Barcelona : },
	note = {Indice.}
}