@article{ref1,
title="The measurement of visual efficiency standards for pilots in the United States Air Force",
journal="Military medicine",
year="1990",
author="Lyons, T. J.",
volume="155",
number="11",
pages="A5-A5",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0026-4075",
doi="",
url="http://dx.doi.org/"
}