@article{ref1,
title="Bringing beasts back in: toward a biosocial theory of aggression",
journal="American sociological review",
year="1974",
author="van den Berghe, P. L.",
volume="39",
number="6",
pages="777-788",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0003-1224",
doi="",
url="http://dx.doi.org/"
}