@article{ref1,
title="The head-down tilt and adaptability for aerospace flight",
journal="Aerospace medicine",
year="1961",
author="Lamb, L. E. and Roman, J.",
volume="32",
number="",
pages="473-486",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}