@article{ref1,
title="Crime and violence in the United States",
journal="Research publications - Association for Research in Nervous and Mental Disease",
year="1974",
author="Clark, Roseanne",
volume="52",
number="",
pages="319-323",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0091-7443",
doi="",
url="http://dx.doi.org/"
}