@book{348203,
	author = {Maddala, G. S.},
	title = {Introduction to econometrics /},
	publisher = {Wiley,},
	year = {2001.},
	address = {[S.l.] :},
	edition = {3nd ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0471497282/chopaconline-20}
}