@article{ref1,
title="Urban violence in Los Angeles",
journal="JAMA journal of the American Medical Association",
year="1994",
author="Silfen, E",
volume="271",
number="22",
pages="1742-1742",
abstract="Abstract unavailable.",
language="",
issn="0098-7484",
doi="",
url="http://dx.doi.org/"
}