@book{176014,
	author = {Hiller, Horst B},
	title = {Espacio, tiempo, materia, infinito},
	publisher = {Editorial Gredos},
	year = {1968},
	series = {Biblioteca Universitaria Gredos, 2: Ensayos, 10.},
	address = {Madrid},
	note = {Translation of : Raum, Zeit, Materie, Unendlichkeit.}
}