MOREIRA, Daniel. Nondirected Linearity and Modulatory Networks in Webern’s Op. 10/4. Revista Portuguesa de Musicologia, [S. l.], v. 3, n. 1, p. 79–106, 2016. Disponível em: https://rpm-ns.pt/index.php/rpm/article/view/288. Acesso em: 16 out. 2025.