@article{ref1,
title="Human errors and sleep",
journal="Sangyo Igaku",
year="1993",
author="Arifuji, H.",
volume="35",
number="4",
pages="255-255",
abstract="<p>[Abstract unavailable]</p> <p>Language: ja</p>",
language="ja",
issn="0047-1879",
doi="",
url="http://dx.doi.org/"
}