@article{ref1,
title="Tear and pressure tests of the patella",
journal="Archiv fur Orthopadische und Unfall-Chirurgie",
year="1971",
author="Fischer, M.",
volume="70",
number="3",
pages="261-274",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0003-9330",
doi="",
url="http://dx.doi.org/"
}