@article{ref1,
title="Accidents in mentally retarded children",
journal="Developmental medicine and child neurology",
year="1973",
author="Williams, C. E.",
volume="15",
number="5",
pages="660-662",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0012-1622",
doi="",
url="http://dx.doi.org/"
}