BONDAR, A. V.; LUKYANOVA, E. A. On the structure of sets of $ σ$-monogeneity for continuous functions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 45, n. 2, p. 226–232, 1993. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5802. Acesso em: 5 dec. 2025.