Kayirken . Т. З. (2021). Historical geography of Altai in the epoch of Turkic Kaganate (VI-XIII centuries). Bulletin of L.N. Gumilyov Eurasian National University. Historical Sciences. Philosophy. Religious Studies Series., 136(3), 40–61. https://doi.org/10.32523/2616-7255-2021-136-3-40-61