GIZA, Antoni. The Bulgarian national liberation movement in the seventeenth century and the Poles. Balcanica Posnaniensia. Acta et studia, [S. l.], v. 2, p. 289–296, 1985. DOI: 10.14746/bp.1985.2.21. Disponível em: https://pressto.amu.edu.pl/index.php/bp/article/view/54832. Acesso em: 4 oct. 2026.