@article{ref1,
title="The actual and the registered frequency of drunkenness in Helsinki",
journal="British journal of addiction to alcohol and other drugs",
year="1969",
author="Bruun, K.",
volume="64",
number="1",
pages="3-8",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0007-0890",
doi="",
url="http://dx.doi.org/"
}