@article{ref1,
title="Sleep and sleepiness following a behaviourally 'active' day",
journal="Ergonomics",
year="1985",
author="Horne, James A. and Minard, A.",
volume="28",
number="3",
pages="567-575",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0014-0139",
doi="",
url="http://dx.doi.org/"
}