@article{ref1,
title="The time zone and circadian rhythms in relation to aircraft occupants taking long-distance flights",
journal="American journal of public health",
year="1968",
author="Gibbons, H. L. and Dille, J. R. and Mohler, S. R.",
volume="58",
number="8",
pages="1404-1409",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}