@article{ref1,
title="Psychobiology of aggression and defense - Preface",
journal="Aggressive behavior",
year="1995",
author="Parmigiani, Stefano",
volume="21",
number="1",
pages="1-2",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0096-140X",
doi="",
url="http://dx.doi.org/"
}