@article{ref1,
title="The value of play in children",
journal="Pediatria de Las Américas",
year="1953",
author="Figueroa guillen, G.",
volume="10",
number="9",
pages="423-426",
abstract="<p>[Abstract unavailable]</p><p>Language: un</p>",
language="un",
issn="",
doi="",
url="http://dx.doi.org/"
}