@article{ref1,
title="Methamphetamine use and sales among gang members: The cross-over effect",
journal="Journal of gang research",
year="2001",
author="Robinson, Curtis J.",
volume="9",
number="1",
pages="39-52",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="1079-3062",
doi="Article",
url="http://dx.doi.org/Article"
}