RADEK, David. The making of a heretic. The case of Bolko V of Opole. Średniowiecze Polskie i Powszechne, [S. l.], v. 12, p. 121–140, 2020. DOI: 10.31261/SPiP.2020.16.06. Disponível em: https://journals.us.edu.pl/index.php/SPP/article/view/10651. Acesso em: 14 nov. 2026.