@article{ref1,
title="The nature of alcohol problems: old concepts and new",
journal="Progress neuro-psychopharmacol & biological psychiatry",
year="1981",
author="Sobell, M. B.",
volume="5",
number="5-6",
pages="475-481",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0364-7722",
doi="",
url="http://dx.doi.org/"
}