VRYONIS, JR., S. Byzantium, its Slavic Elements and their Culture (sixth to ninth centuries). Byzantina Symmeikta, [S. l.], v. 16, p. 63–85, 2008. DOI: 10.12681/byzsym.904. Disponível em: https://ejournals.epublishing.ekt.gr/index.php/bz/article/view/3695. Acesso em: 30 jun. 2024.