@article{ref1,
title="Exploratory studies of early cognitive development",
journal="British journal of educational psychology",
year="1972",
author="Woodward, W. M. and Hunt, M. R.",
volume="42",
number="3",
pages="248-259",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0007-0998",
doi="",
url="http://dx.doi.org/"
}