DRAGOMIR, Sever S. Inequalities of Lipschitz type for power series in Banach algebras. Annales Mathematicae Silesianae, [S. l.], v. 29, p. 61–83, 2015. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/13978. Acesso em: 16 dec. 2025.