@article{ref1,
title="Age and training in the development of a perceptual-motor skill",
journal="Perceptual and motor skills",
year="1959",
author="Humphries, Michael and Shephard, Alfred H.",
volume="9",
number="1",
pages="3-11",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0031-5125",
doi="10.2466/pms.1959.9.g.3",
url="http://dx.doi.org/10.2466/pms.1959.9.g.3"
}