@article{ref1,
title="Opioid peptides: their role in pain, aggression and defeat",
journal="Aggressive behavior",
year="1985",
author="Miczek, Klaus A.",
volume="11",
number="2",
pages="173-173",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0096-140X",
doi="",
url="http://dx.doi.org/"
}