@article{ref1,
title="Effects of sustained performance on human motion",
journal="Perceptual and motor skills",
year="1955",
author="Smith, Patricia Ann and Smith, Karl U.",
volume="5",
number="1",
pages="23-29",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0031-5125",
doi="10.2466/pms.1955.5.g.23",
url="http://dx.doi.org/10.2466/pms.1955.5.g.23"
}