@article{ref1,
title="Control-display association preferences for concentric controls",
journal="Human factors",
year="1966",
author="Bradley, J. V.",
volume="8",
number="6",
pages="539-543",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}