@article{Prentice1978,
author = {Prentice, R.L. and Gloecker, L.A.},
title= {Regression Analysis of Grouped Survival Data with Application to Breast Cancer Data},
year = {1978},
doi = {10.2307/2529588},
journal = {Biometrics},
volume = {3},
pages = {57--67},
}