@article{ref1,
title="Withdrawal, matching, withdrawal matching, and variable matching strategies in reducing attack instigated aggression",
journal="Aggressive behavior",
year="1983",
author="Bertilson, H. S. and Wonderlich, S. A. and Blum, MW",
volume="9",
number="1",
pages="1-11",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0096-140X",
doi="",
url="http://dx.doi.org/"
}