@article{ref1,
title="Some conditions facilitating the occurrence of aggression after the observation of violence",
journal="Journal of personality",
year="1967",
author="Geen, R. G. and Berkowitz, Leonard",
volume="35",
number="4",
pages="566-576",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-3506",
doi="",
url="http://dx.doi.org/"
}