@article{ref1,
title="Protection of the head against the external action of force",
journal="Zentralblatt fur Arbeitsmedizin und Arbeitsschutz",
year="1965",
author="Kosmath, E. and Kosmath, B.",
volume="15",
number="9",
pages="209-215",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0044-4049",
doi="",
url="http://dx.doi.org/"
}