@article{ref1,
title="In-flight hyperventilation during jet pilot training",
journal="Journal of aviation medicine",
year="1957",
author="Balke, B. and Wells, J. G. and Clark, R. T.",
volume="28",
number="3",
pages="241-248",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0095-991X",
doi="",
url="http://dx.doi.org/"
}