@book{1991,
	author = {Nieto Blanc, Ernesto E. and Laje, Eduardo Jorge},
	title = {Curso de derecho civil},
	publisher = {Ediciones Macchi},
	year = {1980},
	address = {Buenos Aires :},
	url = {https://biblioeco.unsa.edu.ar/pmb/images/libros/Curso de Derecho Civil2-l53382.jpg}
}