@article{ref1,
title="Violent death: a comparison between drug users and nondrug users",
journal="Addictive diseases",
year="1974",
author="Zahn, M. A. and Bencivengo, M.",
volume="1",
number="3",
pages="283-295",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0094-0267",
doi="",
url="http://dx.doi.org/"
}