@article{ref1,
title="Aggression and adaptation",
journal="Journal of nervous and mental disease",
year="1969",
author="Spitz, R. A.",
volume="149",
number="2",
pages="81-90",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-3018",
doi="",
url="http://dx.doi.org/"
}