HOWARD-JOHNSTON, James. Rus and Khazars. Studia Ceranea, [S. l.], v. 13, p. 381–418, 2023. DOI: 10.18778/2084-140X.13.45. Disponível em: https://czasopisma.uni.lodz.pl/sceranea/article/view/22138. Acesso em: 3 jul. 2024.