@book{19497,
	author = {Castillo Pinilla, Nicolás  and Alfonso Martinez, Edwin Andres},
	title = {Security GPS / },
	publisher = {Corporación Unificada Nacional de Educación Superior,},
	year = {2020.},
	address = {Bogotá (Colombia) :},
	url = {https://drive.google.com/file/d/192z7rXmtz5KbXP_E80r94BDwQ8AnwUbp/view?usp=sharing}
}