@misc{Śliwowski_Robert_Aerobic,
 author={Śliwowski, Robert and Jóźwiak, Jacek and Pietrzak, Michał and Wieczorek, Andrzej and Wieczorek, Jacek},
 copyright={Akademia Wychowania Fizycznego w Poznaniu},
 howpublished={online},
 publisher={Akademia Wychowania Fizycznego w Poznaniu},
 language={eng},
 type={artykuł},
 title={Aerobic performance of young football players in the preparatory period},
 keywords={soccer, training of teenagers, Multistage Shuttle Run Test, anaerobic threshold, PWC170, VO2max},
}