Development of the Olympic movement in the early 20th century in Germany
... naukowe PWNSA. Warszawa, 2012.
5. Petrova N. Nature and Functions of Physikal Edukation in Bulgario During the Period of Capitalizm (1878—1944) // Phusical Culture and Sport in Bulgaria Through the Centuries red. A. Solakow. Sofia, 1983. P. 69.
physical education, sports, Olympic movement, sports competition, German athletes