@article{ref1,
title="Improvement of midnight driving operations",
journal="Journal of human ergology",
year="1992",
author="Sakai, K.",
volume="21",
number="1",
pages="1-2",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0300-8134",
doi="",
url="http://dx.doi.org/"
}