Matejka, Ondrey: Forging a “Winning Spirit”: The North American YMCA and the Czechoslovak Army, 1918–1921, in: Böhler, Jochen / Konrád, Ota / Kučera, Rudolf (eds.): In the shadow of the Great War: physical violence in East-Central Europe, 1917-1923, New York 2021 Berghahn Books, pp. 142-162.