SAVKIN, V. I. A criterion for Banach manifolds with a separable model to be finite-dimensional. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 46, n. 8, p. 1099–1103, 1994. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5666. Acesso em: 6 dec. 2025.