@article{ref1,
title="Force application in simulatd zero gravity",
journal="Human factors",
year="1969",
author="Norman, D. G.",
volume="11",
number="5",
pages="489-505",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}