@book{34962,
	author = {Dagum, Camilo. and Dagum, Estela Bee.},
	title = {Introducción a la econometría /},
	publisher = {Siglo Veintiuno Editores,},
	year = {1983.},
	series = {Economía y demografía},
	address = {Mexico :},
	edition = {9a ed.}
}