@book{131160,
	author = {Schmal S., Rodolfo. and Rivero F., Sabino. and e-libro, Corp.},
	title = {Un sistema de gestión curricular flexible},
	publisher = {Universidad de Tarapacá,},
	year = {1999.},
	address = {Arica (Chile) :},
	url = {https://elibro.net/ereader/politecnicointernacional/12246}
}