@article{ref1,
title="Unusual patterns of crime during La Violencia in Colombia",
journal="American journal of psychiatry",
year="1969",
author="Leon, C. A.",
volume="125",
number="11",
pages="1564-1575",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-953X",
doi="",
url="http://dx.doi.org/"
}