@article{Lam1994,
author = {Lam, David A. and Miron, Jeffrey A. and Riley, Ann},
title= {Modeling Seasonality in Fecundability, Conceptions, and Births},
year = {1994},
URL = {10.2307/2061888},
journal = {Demography},
volume = {31},
number = {2},
pages = {321--346},
}