LEWICKI, Tadeusz. Un témoignage arabe inconnu sur les Slaves – de l’an 720. Folia Orientalia, [S. l.], v. 4, p. 319–331, 2026. Disponível em: https://wydawnictwo.pan.pl/index.php/fo/article/view/1943. Acesso em: 22 aug. 2026.