@article{ref1,
title="Perception of the horizontal and vertical in simulated subgravity conditions",
journal="United States Armed Forces medical journal",
year="1960",
author="Schock, G. J.",
volume="11",
number="",
pages="786-793",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0566-0777",
doi="",
url="http://dx.doi.org/"
}