@book{35486,
	author = {Marubini, Ettore. and Valsecchi, Maria Grazia.},
	title = {Analysing survival data from clinical trials and observational studies / /},
	publisher = {J. Wiley,},
	year = {c1995.},
	address = {New York :},
	url = {http://www.loc.gov/catdir/description/wiley032/94030632.html}
}