@article{ref1,
title="Aggression appetite or aversion: ethologists viewpoint",
journal="Aggressive behavior",
year="1976",
author="Rasa, O. Anne E.",
volume="2",
number="3",
pages="213-222",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0096-140X",
doi="",
url="http://dx.doi.org/"
}