@article{ref1,
title="Evolution and family homicide",
journal="Science",
year="1989",
author="",
volume="243",
number="4890",
pages="462-464",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0036-8075",
doi="",
url="http://dx.doi.org/"
}