@article{ref1,
title="The classification of sexual offenders",
journal="Criminal behaviour and mental health",
year="1991",
author="Grubin, D. H. and Kennedy, H. G.",
volume="1",
number="2",
pages="123-129",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0957-9664",
doi="",
url="http://dx.doi.org/"
}