@article{ref1,
title="Motor performance under stress as a function of the amount of practice",
journal="Perceptual and motor skills",
year="1961",
author="Ryan, E. Dean",
volume="13",
number="1",
pages="103-106",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0031-5125",
doi="10.2466/pms.1961.13.1.103",
url="http://dx.doi.org/10.2466/pms.1961.13.1.103"
}