@book{31784,
	author = {Hassemer, Winfried. and Ziffer, Patricia S.},
	title = {Critica al derecho penal de hoy /},
	publisher = {Universidad Externado de Colombia,},
	year = {1997.},
	series = {Centro de Investigaciones de derecho penal y filosofia del derecho},
	address = {Bogotá :}
}