Political ties between the Оttoman state and Byzantine empire (according to byzantine sources). Journal of history, [S. l.], v. 107, n. 4, p. 80–89, 2022. DOI: 10.26577/JH.2022.v107.i4.010. Disponível em: https://bulletin-history.kaznu.kz/index.php/1-history/article/view/1559. Acesso em: 5 jul. 2026.