@article{ref1,
title="Words and deeds: the validity of self-report data on alcohol consumption",
journal="Journal of studies on alcohol",
year="1981",
author="Popham, R. E. and Schmidt, W.",
volume="42",
number="3",
pages="355-368",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0096-882X",
doi="",
url="http://dx.doi.org/"
}