@article{ref1,
title="Can Aggression Be Justified in Order to Study Aggression?",
journal="American behavioral scientist",
year="1990",
author="Bertilson, H. S.",
volume="33",
number="5",
pages="594-607",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0002-7642",
doi="10.1177/0002764290033005007",
url="http://dx.doi.org/10.1177/0002764290033005007"
}