@article{Scheike2002,
author = {Scheike, T.H.},
title= {The additive nonparametric and semiparametric Aalen model as the rate function for a counting process},
year = {2002},
doi = {10.1023/A:1015849821021},
journal = {Lifetime Data Analysis},
volume = {8},
number = {3},
pages = {247--262},
}