@article{ref1,
title="Development of criteria for the design of shiftwork systems",
journal="Journal of human ergology",
year="1982",
author="Knauth, P. and Rutenfranz, J.",
volume="11",
number="Suppl",
pages="337-367",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0300-8134",
doi="",
url="http://dx.doi.org/"
}