BONDAR, A. V. On differential properties of mappings into a Banach space. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 49, n. 4, p. 500–509, 1997. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5023. Acesso em: 5 dec. 2025.