@article{ref1,
title="Relationship of Piaget measures to standard intelligence and motor scales",
journal="Perceptual and motor skills",
year="1969",
author="Dudek, S. Z. and Lester, E. P. and Goldberg, J. S. and Dyer, G. B.",
volume="28",
number="2",
pages="351-362",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0031-5125",
doi="",
url="http://dx.doi.org/"
}