ŁUKASZEWSKI, Jakub. Jan Żdżarowski’s cipher system (–1551) within the context of other cryptographic methods used in Poland in the first half of the 16th century. Biblioteka, [S. l.], n. 25 (34), p. 29–77, 2021. DOI: 10.14746/b.2021.25.3. Disponível em: https://pressto.amu.edu.pl/index.php/b/article/view/28574. Acesso em: 17 aug. 2024.