@article{ref1,
title="Visual differentiation, intersensory integration, and voluntary motor control",
journal="Monographs of the society for research in child development",
year="1967",
author="Birch, H. G. and Lefford, A.",
volume="32",
number="2",
pages="1-82",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0037-976X",
doi="",
url="http://dx.doi.org/"
}