@article{ref1,
title="Human tolerances to extreme impacts in free-fall",
journal="Aerospace medicine",
year="1963",
author="Snyder, R. G.",
volume="34",
number="",
pages="695-709",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}