@article{ref1,
title="The physiological basis of circadian timekeeping in primates",
journal="Physiologist",
year="1977",
author="Moore-Ede, M. C. and Sulzman, F. M.",
volume="20",
number="3",
pages="17-25",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0031-9376",
doi="",
url="http://dx.doi.org/"
}