LESZKA, Mirosław Jerzy. Gavril Radomir (1014–1015) and John Vladislav (1015–1018), rulers of the Bulgarian state in the Byzantine sources. Balcanica Posnaniensia. Acta et studia, [S. l.], v. 25, p. 43–51, 2019. DOI: 10.14746/bp.2018.25.2. Disponível em: https://pressto.amu.edu.pl/index.php/bp/article/view/16725. Acesso em: 16 jul. 2024.