@article{ref1,
title="Development of techniques for evaluating the physiological protective efficiency of civil aviation oxygen equipment. AM 67-3",
journal="AM reports",
year="1967",
author="McFadden, E. B.",
volume="",
number="",
pages="1-16",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="1545-1518",
doi="",
url="http://dx.doi.org/"
}