@article{ref1,
title="Synthesis and analysis of visually perceived forms by young children",
journal="Perceptual and motor skills",
year="1972",
author="Greenberg, J. W.",
volume="34",
number="3",
pages="735-741",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0031-5125",
doi="",
url="http://dx.doi.org/"
}