@book{65481,
	author = {Cooper, William W. and Seiford, Lawrence M. and ebrary, Inc.},
	title = {Data envelopment analysis},
	publisher = {Kluwer Academic,},
	year = {c2000.},
	address = {Boston :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10052611}
}