@article{ref1,
title="Head injury in the aged",
journal="Hefte zur Unfallheilkunde",
year="1975",
author="Karimi-nejad, A. and Tritz, W.",
volume="",
number="121",
pages="417-429",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0085-1469",
doi="",
url="http://dx.doi.org/"
}