MATKOWSKI, Janusz. A functional equation characterizing homographic functions Janusz Matkowski. Annales Mathematicae Silesianae, [S. l.], v. 24, p. 61–70, 2010. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/14035. Acesso em: 5 dec. 2025.