@article{Waynforth2011,
author = {Waynforth, D.},
title= {Grandparental investment and reproductive decisions in the longitudinal 1970 British cohort study},
year = {2011},
doi = {10.1098/rspb.2011.1424},
volume = {279},
number = {1731},
pages = {1155--1160},
}