@article{ref1,
title="First steps in learning to pretend",
journal="Special education: forward trends",
year="1979",
author="McConkey, R. and Jeffree, D. and Adrian, H.",
volume="6",
number="4",
pages="13-17",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0305-7526",
doi="",
url="http://dx.doi.org/"
}