@book{108675,
	author = {Silver, M. S. and ebrary, Inc.},
	title = {An index number formula problem},
	publisher = {International Monetary Fund,},
	year = {2009.},
	series = {IMF working paper ;},
	address = {[Washington D.C.] :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10368797}
}