HAUZIŃSKI, Jerzy. The Connections of the Ottomans state crisis with the neighbouring vassal states (1403-1413). Rumelian course. Balcanica Posnaniensia. Acta et studia, [S. l.], v. 21, p. 13–24, 2014. DOI: 10.14746/bp.2014.21.2. Disponível em: https://pressto.amu.edu.pl/index.php/bp/article/view/1418. Acesso em: 28 mar. 2024.