@article{ref1,
title="The assessment of visual distortion through aircraft transparencies",
journal="Journal of aviation medicine",
year="1954",
author="Brown, F. R. and Alsher, D.",
volume="25",
number="3",
pages="249-256",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0095-991X",
doi="",
url="http://dx.doi.org/"
}