@article{ref1,
title="Occupational diseases in the last 35 years",
journal="Offentliche Gesundheitswesen",
year="1972",
author="Symanski, H.",
volume="34",
number="5",
pages="219-233",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0029-8573",
doi="",
url="http://dx.doi.org/"
}