Ouhabi, Ayoub, Driss Zeglami, and Mohamed Ayoubi. “Functional Equations With an Anti-Endomorphism for Functions With Multidimensional Codomains”. Annales Mathematicae Silesianae (December 25, 2024). Accessed June 30, 2025. https://trrest.vot.pl/ojsus/index.php/AMSIL/article/view/18252.