@article{ref1,
title="Control of drug self-administration: the role of aversive consequences",
journal="NIDA research monograph",
year="1978",
author="Mello, N. K.",
volume="",
number="21",
pages="289-308",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1046-9516",
doi="",
url="http://dx.doi.org/"
}