@article{ref1,
title="Studies of the course of most severe closed cranio-cerebral injuries",
journal="Zentralblatt fur Neurochirurgie",
year="1974",
author="Friedrich, P.",
volume="34",
number="3",
pages="169-176",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0044-4251",
doi="",
url="http://dx.doi.org/"
}