@book{8448,
	author = {Aigner, D.J. and Dhrymes, P.J.},
	title = {Journal of econometrics},
	publisher = {North Holland},
	year = {1976},
	address = {Amsterdam :},
	url = {https://biblioeco.unsa.edu.ar/pmb/images/revistas/Journal of Econometrics.jpg}
}