@misc{Tlustý_Tomáš_Orel_2021,
 author={Tlustý, Tomáš},
 type={article},
 publisher={Jan Długosz University in Czestochowa},
 title={Orel – the Catholic physical education association : foreign relations up to 1929},
 address={Częstochowa},
 year={2021},
 language={eng},
}