@book{124110,
	author = {Heckman, James J. and ebrary, Inc.},
	title = {Law and employment},
	publisher = {University of Chicago Press,},
	year = {c2004.},
	series = {A National Bureau of Economic Research conference report},
	address = {Chicago :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10210025}
}