@article{ref1,
title="Cerebral concussion: presentation of the problem",
journal="New York state journal of medicine",
year="1961",
author="Kaplan, H. A.",
volume="61",
number="",
pages="1865-1868",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-7628",
doi="",
url="http://dx.doi.org/"
}