@article{ref1,
title="Fixed vs. rapid rotation shift work",
journal="Journal of Occupational Medicine",
year="1979",
author="Murphy, T. J. and Winget, C. M. and LaDou, J.",
volume="21",
number="5",
pages="318-326",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0096-1736",
doi="",
url="http://dx.doi.org/"
}