@article{ref1,
title="Empirical studies of the stress of the Deutsche Reichsbahn power vehicle drivers for the purpose of optimizing the work schedules",
journal="Zeitschrift fur die Gesamte Hygiene und Ihre Grenzgebiete",
year="1980",
author="Schenk, S. and Willms, L.",
volume="26",
number="9",
pages="634-639",
abstract="<p>[Abstract unavailable]</p> <p>Language: de</p>",
language="de",
issn="0049-8610",
doi="",
url="http://dx.doi.org/"
}