Бойденко, Светлана, and Константин Скиба. “Inspection Trip of the Guard General Staff Lieutenant D. Milyutin across the Kuban River in December 1839”. Journal of Frontier Studies, no. 1 (March 15, 2017): 37-50. Accessed April 23, 2024. https://jfs.today/index.php/jfs/article/view/61.