@article{Andersen1982,
author = {Andersen, P.K. and Gill, R.D.},
title= {Cox's Regression Model for Counting Processes: A Large Sample Study},
year = {1982},
doi = {10.1214/aos/1176345976},
journal = {Annals of Statistics},
volume = {10},
number = {4},
pages = {1100--1120},
}