@book{581,
	author = {Greene, William H.},
	title = {Econometric analysis},
	publisher = {Pearson},
	year = {2012},
	address = {Boston :},
	edition = {7a. ed.},
	url = {https://biblioeco.unsa.edu.ar/pmb/images/libros/Econometric Analysis-l118954.jpg}
}