AISSI, Youssef; ZEGLAMI, Driss; AYOUBI, Mohamed. A variant of d’Alembert’s matrix functional equation. Annales Mathematicae Silesianae, [S. l.], v. 35, n. 1, p. 21–43, 2020. Disponível em: https://trrest.vot.pl/ojsus/index.php/AMSIL/article/view/13472. Acesso em: 2 jul. 2025.