FEDERHOFER, Hellmut. The Relationship between the Particular and the General in Beethoven’s Piano Sonatas. Musicological Annual, Ljubljana, SI, v. 7, n. 1, p. 20–29, 1971. DOI: 10.4312/mz.7.1.20-29. Disponível em: https://journals.uni-lj.si/MuzikoloskiZbornik/article/view/4756. Acesso em: 12 may. 2025.