@article{ref1,
title="The varied effects of punishment on behavior",
journal="Psychological review",
year="1963",
author="Church, R. M.",
volume="70",
number="",
pages="369-402",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0033-295X",
doi="",
url="http://dx.doi.org/"
}