@article{ref1,
title="Review of stress in air traffic control: its measurement and effects",
journal="Aviation, space, and environmental medicine",
year="1979",
author="Crump, J. H.",
volume="50",
number="3",
pages="243-248",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0095-6562",
doi="",
url="http://dx.doi.org/"
}