@article{ref1,
title="Circadian rhythms in simulated and manned orbital space flight",
journal="Rassegna di Neurologia Vegetativa",
year="1967",
author="Rummel, J. and Sallin, E. and Lipscomb, Hester J.",
volume="21",
number="1",
pages="41-56",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0048-6752",
doi="",
url="http://dx.doi.org/"
}