@article{ref1,
title="Normative violatons and punitive sanctions: theory and experiment",
journal="Aggressive behavior",
year="1980",
author="Pepitone, A.",
volume="6",
number="3",
pages="274-274",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0096-140X",
doi="",
url="http://dx.doi.org/"
}