@article{ref1,
title="High altitude high velocity flying with special reference to the human factors. II. Time of consciousness during exposure to various pressure altitudes",
journal="Journal of aviation medicine",
year="1950",
author="Webster, A. P. and Reynolds, O. R.",
volume="21",
number="3",
pages="237-245",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0095-991X",
doi="",
url="http://dx.doi.org/"
}