@article{ref1,
title="Play and the problems of toys",
journal="Medical journal of Australia",
year="1968",
author="Pols, R.",
volume="1",
number="7",
pages="278-282",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0025-729X",
doi="",
url="http://dx.doi.org/"
}