@article{ref1,
title="Medico-preventive aspects of play in childhood in modern society",
journal="Annali della Sanità Pubblica",
year="1970",
author="D'Andrea, R. and Rossi, Maryann",
volume="31",
number="3",
pages="339-352",
abstract="<p>[Abstract unavailable]</p><p>Language: it</p>",
language="it",
issn="0021-3071",
doi="",
url="http://dx.doi.org/"
}