@article{ref1,
title="Cranial injuries and the post concussion syndrome",
journal="Medical trial technique quarterly",
year="1974",
author="Elia, J. C.",
volume="21",
number="2",
pages="127-161",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0025-7591",
doi="",
url="http://dx.doi.org/"
}