@book{42644,
	author = {James J. Heckman, Edward E. Leamer},
	title = {Handbook of Econometrics},
	publisher = {ELSEVIER,},
	year = {2007},
	note = {<strong>Off-Campus Access:</strong> Athens ID and Password Required},
	url = {https://www.sciencedirect.com/science/book/9780444532008}
}