@article{ref1,
title="Aggression and the XYY personality",
journal="International journal of law and psychiatry",
year="1983",
author="Theilgaard, A.",
volume="6",
number="3-4",
pages="413-421",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0160-2527",
doi="",
url="http://dx.doi.org/"
}