@book{242906,
	author = {O'Quigley, John. and ebrary, Inc.},
	title = {Proportional hazards regression},
	publisher = {Springer,},
	year = {c2008.},
	series = {Statistics for biology and health},
	address = {New York :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10223254}
}