@article{ref1,
title="Multiday exposure to 5.2 per cent O 2 at 4 ATA. Scope of program",
journal="Aerospace medicine",
year="1973",
author="Lambertsen, C. J. and Wright, W. B.",
volume="44",
number="7",
pages="828-833",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}