@misc{Nabrdalik_Marcin_The,
 author={Nabrdalik Marcin},
 howpublished={online},
 publisher={Wydaw. Politechniki Częstochowskiej},
 language={eng},
 type={czasopismo},
 title={The issue of contact strength occuring in polyethylene flat inserts of total knee endoprostheses},
 keywords={endoprosthesis of knee joint, stress, strain, Hertz theory},
}