BYLINA, Stanisław. The Bogomil movement in medieval Bulgaria. Social, political and cultural considerations. Balcanica Posnaniensia. Acta et studia, [S. l.], v. 2, p. 133–146, 1985. DOI: 10.14746/bp.1985.2.10. Disponível em: https://pressto.amu.edu.pl/index.php/bp/article/view/54823. Acesso em: 4 oct. 2026.