@article{ref1,
title="Robbery Violence",
journal="Journal of criminal law and criminology",
year="1987",
author="Cook, Philip J.",
volume="78",
number="2",
pages="357-376",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0091-4169",
doi="",
url="http://dx.doi.org/"
}