@article{McKeague1994,
author = {McKeague, I.W. and Sasieni, P.D.},
title= {A partly parametric additive risk model},
year = {1994},
doi = {10.1093/biomet/81.3.501},
journal = {Biometrika},
volume = {81},
number = {3},
pages = {501--514},
}