@article{ref1,
title="On adaptive manual control",
journal="Ergonomics",
year="1969",
author="Young, L. R.",
volume="12",
number="4",
pages="635-674",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0014-0139",
doi="",
url="http://dx.doi.org/"
}