@article{ref1,
title="Present status of aircraft liquid oxygen breathing systems",
journal="Journal of aviation medicine",
year="1958",
author="Roach, C. G. and Roundy, R. W.",
volume="29",
number="12",
pages="898-902",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0095-991X",
doi="",
url="http://dx.doi.org/"
}