@article{ref1,
title="On the evolution of human brood size",
journal="Evolution",
year="1990",
author="Anderson, David J.",
volume="44",
number="2",
pages="438-440",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0014-3820",
doi="10.2307/2409420",
url="http://dx.doi.org/10.2307/2409420"
}