@article{ref1,
title="Commercial airline pilot and his ability to remain alert",
journal="Aerospace medicine",
year="1970",
author="Evans, W. E. and Carter, E. T. and Moyer, N. J. and Yoss, R. E.",
volume="41",
number="12",
pages="1339-1346",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}