@article{Almond2007,
author = {Almond, D. and Edlund, L.},
title= {Trivers–Willard at birth and one year: Evidence from US natality data 1983–2001},
year = {2007},
doi = {10.1098/rspb.2007.0524},
volume = {274},
number = {1624},
pages = {2491--2496},
}