Inobat Ibragimovna, U. “Geographical-Territorial Border of Cultural and Economic Centers in the Ancient Times on the Borders of Amudarya”. American Journal of Language, Literacy and Learning in STEM Education (2993-2769), vol. 2, no. 2, Feb. 2024, pp. 157-61, http://grnjournal.us/index.php/STEM/article/view/3089.