PTAK, Marian J. The year 1336 in the process of political and legal transformations in Silesia. [journal closed], [S. l.], v. 12, p. 71–85, 2020. DOI: 10.31261/ZDP.2019.20.06. Disponível em: https://journals.us.edu.pl/index.php/zdp/article/view/8826. Acesso em: 10 nov. 2026.