@article{ref1,
title="The Study of Urban Violence: Some Implications of Laboratory Studies of Frustration and Aggression",
journal="American behavioral scientist",
year="1968",
author="Berkowitz, Leonard",
volume="11",
number="4",
pages="14-17",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0002-7642",
doi="10.1177/000276426801100405",
url="http://dx.doi.org/10.1177/000276426801100405"
}