TY  - JOUR
TI  - The Efficiency of Cox's Likelihood Function for Censored Data
AU  - Bradley Efron
JO  - Journal of the American Statistical Association
PY  - 1977
VL  - 72
IS  - 359
DO  - 10.1080/01621459.1977.10480613
UR  - https://doi.org/10.1080/01621459.1977.10480613
ER  -