@book{34968,
	author = {Stock, James H. and Watson, Mark W.},
	title = {Introduction to econometrics /},
	publisher = {Pearson/Addison Wesley,},
	year = {2008.},
	address = {Boston :},
	url = {http://www.loc.gov/catdir/toc/ecip075/2006039352.html}
}