@article{ref1,
title="Circadian rhythms in step-input pursuit tracking",
journal="Ergonomics",
year="1977",
author="Buck, L.",
volume="20",
number="1",
pages="19-31",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0014-0139",
doi="10.1080/00140137708931597",
url="http://dx.doi.org/10.1080/00140137708931597"
}