@article{ref1,
title="Post-traumatic cerebral syndromes",
journal="Canadian Medical Association journal",
year="1951",
author="Richardson, J. C.",
volume="64",
number="5",
pages="414-419",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0008-4409",
doi="",
url="http://dx.doi.org/"
}