@article{ref1,
title="Dependency, conflict and aggression",
journal="Aggressive behavior",
year="1989",
author="Beller, EK",
volume="15",
number="1",
pages="39-40",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0096-140X",
doi="",
url="http://dx.doi.org/"
}