@article{ref1,
title="Evolutionary ethics, aggression, and violence: lessons from primate research",
journal="Journal of law, medicine and ethics",
year="2004",
author="de Waal, Frans B.",
volume="32",
number="1",
pages="18-23",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1073-1105",
doi="",
url="http://dx.doi.org/"
}