@article{ref1,
title="An approach to the physiologic simulation of the null-gravity state",
journal="Journal of aviation medicine",
year="1958",
author="Knight, L. A.",
volume="29",
number="4",
pages="283-286",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0095-991X",
doi="",
url="http://dx.doi.org/"
}