@article{ref1,
title="Civilians who kill police officers and police officers who kill civilians: a comparison of American cities",
journal="Journal of police science and administration",
year="1982",
author="Lester, David",
volume="10",
number="4",
pages="384-387",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0090-9084",
doi="",
url="http://dx.doi.org/"
}