@article{ref1,
title="Effect of a new shift system on sickness and accident incidence and form of recreation",
journal="Deutsche Gesundheitswesen",
year="1958",
author="Schunck, K. H.",
volume="13",
number="35",
pages="1092-1095",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0012-0219",
doi="",
url="http://dx.doi.org/"
}