@misc{Dvorak_Miroslav_Player, author={Dvorak, Miroslav and Valkova, Hana and Belka, Jan}, copyright={Akademia Wychowania Fizycznego w Poznaniu}, howpublished={online}, publisher={Akademia Wychowania Fizycznego w Poznaniu}, language={eng}, type={artykuł}, title={Player careers of football coaches}, keywords={age, performance level, professional player}, }