Mingazov, Shamil R. “BOLGAR KNIGHTS OF THE LOMBARD KINGDOM”. Arkheologiia Evraziiskikh Stepei (Archaeology of the Eurasian Steppes), no. 6 (December 20, 2020): 132–156. Accessed October 12, 2026. https://www.evrazstep.ru/index.php/aes/article/view/43.