@article{ref1,
title="Bullet ricochet in automobile ceilings",
journal="Journal of forensic sciences",
year="1982",
author="Janssen, D. W. and Levine, R. T.",
volume="27",
number="1",
pages="209-212",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-1198",
doi="",
url="http://dx.doi.org/"
}