KLEJN, Zbigniew. The role of national minorities in the state and national revival of Bulgaria (1877–1914). Balcanica Posnaniensia. Acta et studia, [S. l.], n. 11/12, p. 113–120, 2001. DOI: 10.14746/bp.2001.11-12.12. Disponível em: https://pressto.amu.edu.pl/index.php/bp/article/view/52617. Acesso em: 4 oct. 2026.