@book{5953,
	author = {Gruber, Jonathan. and National Bureau of Economic Research.},
	title = {Risky behavior among youths},
	publisher = {University of Chicago Press,},
	year = {c2001.},
	series = {National Bureau of Economic Research conference report},
	address = {Chicago :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10275462}
}