@article{ref1,
title="A Comparison of Gang Members and Non-Gang Members in a Prison Setting",
journal="Prison journal",
year="1991",
author="Shelden, Randall G.",
volume="71",
number="2",
pages="50-60",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0032-8855",
doi="",
url="http://dx.doi.org/"
}