@article{ref1,
title="Preventing street gang violence",
journal="American family physician",
year="1999",
author="Hixon, A. L.",
volume="59",
number="8",
pages="2121-2, 2125, 2132",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-838X",
doi="",
url="http://dx.doi.org/"
}