@article{ref1,
title="Analysis of disability periods in workers of a large-scale industrial complex",
journal="Zeitschrift fur Arztliche Fortbildung (Jena)",
year="1969",
author="Schieche, M.",
volume="63",
number="15",
pages="842-847",
abstract="<p>[Abstract unavailable]</p> <p>Language: de</p>",
language="de",
issn="0044-2178",
doi="",
url="http://dx.doi.org/"
}