@article{ref1,
title="The problem of blunt cranial injuries and their clinical classification",
journal="Deutsche Gesundheitswesen",
year="1951",
author="Osterchrist, W.",
volume="6",
number="2",
pages="38-42",
abstract="<p>[Abstract unavailable]</p> <p>Language: un</p>",
language="un",
issn="0012-0219",
doi="",
url="http://dx.doi.org/"
}