@article{ref1,
title="Heroin abuse indicators: a modest reinterpretation",
journal="International journal of the addictions",
year="1982",
author="Gardin, T. H.",
volume="17",
number="5",
pages="925-927",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0020-773X",
doi="",
url="http://dx.doi.org/"
}