@book{159286,
	author = {Coelli, Tim. and ebrary, Inc.},
	title = {A primer on efficiency measurement for utilities and transport regulators},
	publisher = {World Bank,},
	year = {2003.},
	series = {WBI development studies},
	address = {Washington, D.C. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10041234}
}