@article{ref1,
title="Violence and drugs",
journal="Journal of psychoactive drugs",
year="1997",
author="DuPont, R. L.",
volume="29",
number="4",
pages="303-305",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0279-1072",
doi="",
url="http://dx.doi.org/"
}