@book{24728,
	author = {Kalbfleisch, John D. and Prentice, Ross L. ; jt. auth.},
	title = {The statistical analysis of failure time data /},
	publisher = {John Wiley},
	year = {2002},
	series = {Wiley series in Probability and Statistics},
	address = {New York},
	edition = {2nd}
}