@article{ref1,
title="Guns and crime: the perils of long division",
journal="Journal of Policy Analysis and Management",
year="1981",
author="Cook, Philip J.",
volume="1",
number="1",
pages="120-125",
abstract="unavailable]  <p>Language: en</p>",
language="en",
issn="0276-8739",
doi="",
url="http://dx.doi.org/"
}