1. Nonparametric-Estimation from Incomplete Observations;E L Kaplan;J Am Stat Assoc,1958
2. Empirical Transition Matrix for Nonhomogeneous Markov-Chains Based on Censored Observations;O O Aalen;Scandinavian Journal of Statistics,1978
3. Regression Models and Life-Tables;D R Cox;Journal of the Royal Statistical Society Series B-Statistical Methodology,1972
4. A proportional hazards model for the subdistribution of a competing risk;J P Fine;J Am Stat Assoc,1999
5. Analysis of Survival Data under Proportional Hazards Model;N E Breslow;International Statistical Review,1975