@article{ref1,
title="Irreversible athletic injuries of the lower extremities",
journal="Schweizerische Zeitschrift fur Sportmedizin",
year="1979",
author="Krahl, H.",
volume="27",
number="1",
pages="33-39",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0036-7885",
doi="",
url="http://dx.doi.org/"
}