HIMMEL, Martin. Complementary results to Heuvers’s characterization of logarithmic functions. Annales Mathematicae Silesianae, [S. l.], v. 31, p. 99–106, 2017. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/13942. Acesso em: 26 apr. 2025.