@article{ref1,
title="Delayed force feedback",
journal="Human factors",
year="1966",
author="Ferrell, W. R.",
volume="8",
number="5",
pages="449-455",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}