V. VIKTORIN, “THE LOWER REACHES OF THE VOLGA AND THE NORTHERN CASPIAN AT THE CROSSROADS: TIME AND PEOPLE, PAST AND PRESENT”, CAC, vol. 5, no. 3, pp. 90–97, Jun. 2004, Accessed: May 03, 2025. [Online]. Available: https://www.ca-c.org/CAC/index.php/cac/article/view/503