@article{ref1,
title="Problems of knee injuries from the viewpoint of the Swiss Accident Insurance Institute",
journal="Helvetica Chirurgica Acta",
year="1984",
author="Ramseier, E. W. and Zollinger, H.",
volume="51",
number="5",
pages="499-504",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0018-0181",
doi="",
url="http://dx.doi.org/"
}