@article{ref1,
title="Knee impacts and resulting injuries in automobile and motorcycle riders",
journal="Archiv fur Orthopadische und Unfall-Chirurgie",
year="1960",
author="Vollmar, J. and Benz, K.",
volume="52",
number="",
pages="438-459",
abstract="<p>[Abstract unavailable]</p> <p>Language: de</p>",
language="de",
issn="0003-9330",
doi="",
url="http://dx.doi.org/"
}