@article{ref1,
title="Circadian rhythmicity and fatigue in flight operations",
journal="Journal of UOEH",
year="1985",
author="Graeber, R. Curtis and Foushee, H. C. and Gander, Philippa H. and Noga, G. W.",
volume="7",
number="",
pages="122-130",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0387-821X",
doi="",
url="http://dx.doi.org/"
}