@article{ref1,
title="Homicide in Chicago: A Nine-Year Study (1965-1973)",
journal="Journal of criminal law and criminology",
year="1975",
author="Block, Richard",
volume="66",
number="4",
pages="496-510",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0091-4169",
doi="",
url="http://dx.doi.org/"
}