@article{ref1,
title="Sustained pilot performance requires more than skill",
journal="Aerospace medicine",
year="1967",
author="Hartman, B. O. and Cantrell, G. K.",
volume="38",
number="8",
pages="801-803",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}