@article{ref1,
title="Internal injuries of the knee joint in athletes",
journal="Munchener Medizinische Wochenschrift",
year="1972",
author="Liljedahl, S. O. and Gillquist, J.",
volume="114",
number="31",
pages="1371-1376",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0027-2973",
doi="",
url="http://dx.doi.org/"
}