@article{ref1,
title="Injuries of knee in athletes",
journal="Minnesota medicine",
year="1972",
author="Sim, Franklin H. and Detenbeck, L. C.",
volume="55",
number="10",
pages="881-885",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0026-556X",
doi="",
url="http://dx.doi.org/"
}