@article{ref1,
title="Relative motion of elements in instrument displays",
journal="Aerospace medicine",
year="1963",
author="Matheny, W. G. and Dougherty, D. J. and Willis, J. M.",
volume="34",
number="",
pages="1041-1046",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-9402",
doi="",
url="http://dx.doi.org/"
}