@book{35697,
	author = {Hougaard, Philip.},
	title = {Analysis of multivariate survival data /},
	publisher = {Springer,},
	year = {c2000.},
	series = {Statistics for biology and health},
	address = {New York :},
	url = {http://www.loc.gov/catdir/toc/fy031/00040047.html}
}