@misc{Wieczorek_Jacek_Physical,
 author={Wieczorek, Jacek and Wieczorek, Andrzej and Jadczak, Łukasz and Śliwowski, Robert and Pietrzak, Michał},
 copyright={Akademia Wychowania Fizycznego w Poznaniu},
 howpublished={online},
 publisher={Akademia Wychowania Fizycznego w Poznaniu},
 language={eng},
 type={artykuł},
 title={Physical activity and injuries and overstraining syndromes in sitting volleyball players},
 keywords={injuries and overstraining syndromes, physical activity, sport for the disabled, sitting volleyball},
}