LOOS, Helmut. Beethoven und der Fortschrittsgedanke. Musicological Annual, Ljubljana, SI, v. 51, n. 2, p. 57–67, 2015. DOI: 10.4312/mz.51.2.57-67. Disponível em: https://journals.uni-lj.si/MuzikoloskiZbornik/article/view/3492. Acesso em: 25 jan. 2025.