M. KH. NAZIROV. POLITICAL DEVELOPMENT AND DISSOLUTION OF THE FIRST BULGARIAN KINGDOM IN THE VII-XI CENTURIES. Journal of Social Research in Uzbekistan, [S. l.], v. 2, n. 06, p. 1–9, 2022. DOI: 10.37547/supsci-jsru-02-06-01. Disponível em: https://topjournals.uz/index.php/jsru/article/view/108. Acesso em: 5 oct. 2025.