@article{ref1,
title="Requirements for experimental zero gravity parabolas",
journal="Journal of aviation medicine",
year="1958",
author="Ward, J. E.",
volume="29",
number="6",
pages="428-432",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0095-991X",
doi="",
url="http://dx.doi.org/"
}