@article{ref1,
title="The perception of violence",
journal="Medicine, science, and the law",
year="1972",
author="Sparks, R. F.",
volume="12",
number="4",
pages="244-247",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0025-8024",
doi="",
url="http://dx.doi.org/"
}