WALORSKI, Janusz. On some solutions of the Schröder equation in Banach spaces. Annales Mathematicae Silesianae, [S. l.], v. 8, p. 103–110, 1994. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/14222. Acesso em: 18 apr. 2025.