@article{ref1,
title="The psychic concussion syndrome",
journal="Nervenarzt",
year="1953",
author="Voss, R.",
volume="24",
number="4",
pages="155-161",
abstract="<p>[Abstract unavailable]</p><p>Language: un</p>",
language="un",
issn="0028-2804",
doi="",
url="http://dx.doi.org/"
}