@article{ref1,
title="Current traffic problems",
journal="Therapie der Gegenwart",
year="1973",
author="Handel, K.",
volume="112",
number="1",
pages="140-151",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0040-5965",
doi="",
url="http://dx.doi.org/"
}