@article{ref1,
title="Enforcement of DUI laws",
journal="Alcohol, drugs and driving",
year="1991",
author="Voas, Robert B.",
volume="7",
number="3-4",
pages="173-196",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0891-7086",
doi="",
url="http://dx.doi.org/"
}