S, Tengis, Saran S, Munkhbayar L, and Bemmann J. “LUMINESCENCE DATING OF AN ANCIENT WALLED SETTLEMENT IN ORKHON VALLEY, MONGOLIA”. Proceedings of the Mongolian Academy of Sciences 57, no. 4 (January 15, 2018): 4–14. Accessed January 15, 2025. https://mongoliajol.info/index.php/PMAS/article/view/918.