@article{ref1,
title="Treatment of post-concussion syndrome",
journal="Medizinische Monatsschrift",
year="1969",
author="Kemmerich, B. C.",
volume="23",
number="10",
pages="464-466",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0025-8474",
doi="",
url="http://dx.doi.org/"
}