Šegula, Tomaž. “The Lieder of Slavko Osterc up to His Concert in 1925”. Musicological Annual 7, no. 1 (December 1, 1971): 69–89. Accessed June 24, 2021. https://revije.ff.uni-lj.si/MuzikoloskiZbornik/article/view/4771.