JARCZYK, Justyna; JARCZYK, Witold. On a functional equation appearing on the margins of a mean invariance problem. Annales Mathematicae Silesianae, [S. l.], v. 34, n. 1, p. 96–103, 2020. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/13635. Acesso em: 18 apr. 2025.