@article{ref1,
title="Fact-Free Gun Policy?",
journal="University of Pennsylvania law review",
year="2003",
author="Cook, Philip J. and Ludwig, J.",
volume="151",
number="4",
pages="1329-1340",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0041-9907",
doi="",
url="http://dx.doi.org/"
}