@article{ref1,
title="Technical control services and modern work safety",
journal="Zentralblatt fur Arbeitsmedizin und Arbeitsschutz",
year="1971",
author="Mayer, P.",
volume="21",
number="1",
pages="14-18",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0044-4049",
doi="",
url="http://dx.doi.org/"
}