@book{106827,
	author = {Brehm, John, and ebrary, Inc.},
	title = {The phantom respondents},
	publisher = {University of Michigan Press,},
	year = {c1993.},
	series = {Michigan studies in political analysis},
	address = {Ann Arbor :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10355570}
}