@article{ref1,
title="Hesitations in continuous tracking induced by a concurrent discrete task",
journal="Human factors",
year="1987",
author="Klapp, S. T. and Kelly, P. A. and Netick, A.",
volume="29",
number="3",
pages="327-337",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}