FECHNER, Włodzimierz; PIERZCHAŁKA, Marta; SMEJDA, Gabriela. On a generalized conjecture by Alzer and Matkowski. Annales Mathematicae Silesianae, [S. l.], v. 40, n. 1, p. 77–82, 2025. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/18828. Acesso em: 9 apr. 2026.