@article{ref1,
title="A facilitative effect of prior punishments on. II. Subsequent resistance to simple extinction",
journal="Acta psychologica",
year="1968",
author="Akhtar, M.",
volume="28",
number="2",
pages="189-194",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0001-6918",
doi="",
url="http://dx.doi.org/"
}