@article{ref1,
title="Time-zone effects",
journal="Science",
year="1969",
author="Siegel, P. V. and Gerathewohl, S. J. and Mohler, S. R.",
volume="164",
number="885",
pages="1249-1255",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0036-8075",
doi="",
url="http://dx.doi.org/"
}