@article{ref1,
title="Cognitive performance, sleep quality and mood during deep oxyhelium diving",
journal="Ergonomics",
year="1981",
author="Lewis, V. J. and Baddeley, A. D.",
volume="24",
number="10",
pages="773-793",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0014-0139",
doi="",
url="http://dx.doi.org/"
}