@article{ref1,
title="Spectral transmission of a new aviation and skiing filter",
journal="American journal of optometry and archives of American Academy of Optometry",
year="1973",
author="Everson, R. W.",
volume="50",
number="5",
pages="413-415",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-9408",
doi="",
url="http://dx.doi.org/"
}