MOSZNER, Zenon. Sur un théorème de S. Gołąb. Annales Mathematicae Silesianae, [S. l.], v. 3, p. 51–57, 1990. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/14302. Acesso em: 5 dec. 2025.