@article{ref1,
title="Some physiological findings on normal men subjected to negative g",
journal="Journal of aviation medicine",
year="1950",
author="Ryan, E. A. and Kerr, W. K. and Franks, W. R.",
volume="21",
number="3",
pages="173-194",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0095-991X",
doi="",
url="http://dx.doi.org/"
}