@article{ref1,
title="Violence in Human Behavior",
journal="Science",
year="1963",
author="Rifkin, A. H.",
volume="140",
number="3569",
pages="904-906",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0036-8075",
doi="10.1126/science.140.3569.904",
url="http://dx.doi.org/10.1126/science.140.3569.904"
}