@article{ref1,
title="Areas of vision and cockpit visibility",
journal="Transactions - American Academy of Ophthalmology and Otolaryngology",
year="1950",
author="Hall, M. V. and Greenbaum, L. J. Jr",
volume="55",
number="",
pages="75-88",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-7154",
doi="",
url="http://dx.doi.org/"
}