@book{3390,
	author = {Elgassi, Alberto Á.},
	title = {El régimen de contrataciones de la administración pública nacional},
	publisher = {AD-HOC},
	year = {2006},
	address = {Buenos Aires :},
	url = {https://biblioeco.unsa.edu.ar/pmb/images/libros/El_reg_contrat_Elgassi.jpg}
}