@article{ref1,
title="Perceptive and motor transposition in the developmental period",
journal="Archivio di Psicologia, Neurologia e Psichiatria",
year="1953",
author="Zunini, G.",
volume="14",
number="3",
pages="343-373",
abstract="<p>[Abstract unavailable]</p><p>Language: un</p>",
language="un",
issn="0004-0150",
doi="",
url="http://dx.doi.org/"
}