@article{ref1,
title="Gravitational effects on blood distribution",
journal="Aerospace medicine",
year="1968",
author="Kesselman, R. H.",
volume="39",
number="2",
pages="162-165",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}