@article{ref1,
title="'Unraveling juvenile delinquency' revisited--cohort studies at risk",
journal="Addiction",
year="1996",
author="Klingemann, H. K.",
volume="91",
number="4",
pages="502-504",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0965-2140",
doi="",
url="http://dx.doi.org/"
}