@article{ref1,
title="Police Liability for Negligent Failure to Prevent Crime",
journal="Harvard law review",
year="1981",
author="",
volume="94",
number="4",
pages="821-840",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0017-811X",
doi="10.2307/1340635",
url="http://dx.doi.org/10.2307/1340635"
}