@article{ref1,
title="Violence between police and protesters",
journal="Aggressive behavior",
year="1984",
author="Vanreenen, P",
volume="10",
number="2",
pages="177-177",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0096-140X",
doi="",
url="http://dx.doi.org/"
}