@article{ref1,
title="Requirements for oxygen in commercial aviation; some aspects of its use",
journal="Journal of aviation medicine",
year="1948",
author="Carlson, L. D. and Lovelace, W. R. and Burns, H. L.",
volume="19",
number="6",
pages="399-413",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0095-991X",
doi="",
url="http://dx.doi.org/"
}