@article{ref1,
title="Some functions of play and playfulness. A developmental perspective",
journal="Psychoanalytic study of the child, The",
year="1987",
author="Moran, G. S.",
volume="42",
number="",
pages="11-29",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0079-7308",
doi="",
url="http://dx.doi.org/"
}