@article{ref1,
title="The information capacity of the human motor system in controlling the amplitude of movement",
journal="Journal of experimental psychology",
year="1954",
author="Fitts, P. M.",
volume="47",
number="6",
pages="381-391",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0022-1015",
doi="",
url="http://dx.doi.org/"
}