@article{ref1,
title="Sex, strain, and housing: variables influencing effects of prior shock exposure on shock-induced aggression",
journal="Aggressive behavior",
year="1978",
author="Nelson, Christopher and Knutson, John F.",
volume="4",
number="3",
pages="237-252",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0096-140X",
doi="",
url="http://dx.doi.org/"
}