@book{58477,
	author = {Little, Roderick J. A., and Rubin, Donald B.,},
	title = {Statistical analysis with missing data /},
	publisher = {John Wiley & Sons, Inc.,},
	year = {2002.},
	address = {Hoboken, New Jersey :},
	edition = {Second edition.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10921256}
}