@article{ref1,
title="The spearhead: assessing gangs and community vulnerability to gang infiltration",
journal="Journal of gang research",
year="2015",
author="Park, M. Michaux and Whitehead, Staphanie",
volume="22",
number="4",
pages="19-35",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1079-3062",
doi="",
url="http://dx.doi.org/"
}