WRÓBEL, Piotr. Bosnia’s attitude to the expansion of Islam in the first half of the 15th century. Balcanica Posnaniensia. Acta et studia, [S. l.], v. 8, p. 83–92, 1997. DOI: 10.14746/bp.1997.8.8. Disponível em: https://pressto.amu.edu.pl/index.php/bp/article/view/54687. Acesso em: 8 aug. 2026.