@article{ref1,
title="Intelligence and brain damage in alcoholics. A study in patients of middle and upper social class",
journal="Quarterly journal of studies on alcohol",
year="1973",
author="Smith, J. W. and Burt, D. W. and Chapman, R. F.",
volume="34",
number="2",
pages="414-422",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0033-5649",
doi="",
url="http://dx.doi.org/"
}