@book{39235,
	author = {Griliches, Zvi, and ebrary, Inc.},
	title = {Output measurement in the service sectors},
	publisher = {University of Chicago Press,},
	year = {c1992.},
	series = {Studies in income and wealth ;},
	address = {Chicago :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10229983}
}