@book{2250,
	author = {Calvino, Italo;  and Bernárdez, Aurora, },
	title = {Las ciudades invisibles /},
	publisher = {Ediciones Siruela,},
	year = {2002.},
	series = {Siruela. Biblioteca Calvino ; },
	address = {Madrid :},
	edition = {23a ed.}
}