@article{ref1,
title="The effect of the precision of informational feedback on human tracking performance",
journal="Human factors",
year="1961",
author="Hunt, D. P.",
volume="3",
number="2",
pages="77-85",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}