@article{ref1,
title="Argument against group selection explanations for ritualized aggression",
journal="Aggressive behavior",
year="1979",
author="Fry, Denise",
volume="5",
number="2",
pages="194-194",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0096-140X",
doi="",
url="http://dx.doi.org/"
}