@article{ref1,
title="Night and shift work of engine drivers. 2. Organization of daily service schedules",
journal="Internationales Archiv für Arbeitsmedizin",
year="1974",
author="Rohmert, W. and Hildebrandt, G. and Rutenfranz, J.",
volume="33",
number="2",
pages="99-114",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0020-5923",
doi="",
url="http://dx.doi.org/"
}