@article{ref1,
title="Effects of fixed versus variable reference frequencies on psychophysical judgments of vibration",
journal="Human factors",
year="1978",
author="Rao, B. K. and Jones, B.",
volume="20",
number="1",
pages="97-102",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}