Vinogradov, Sergey, Elena Savelyeva, Oleg Likholet, and Oleg Khotinetskiy. “Problems of Transport Communication Development On the Caspian Sea in the Context Oh the Discussion On the Construction of the Caspian-Volga Channel In the Early 20th Century”. Journal of Frontier Studies 7, no. 3 (September 1, 2022): 140-152. Accessed April 20, 2024. https://jfs.today/index.php/jfs/article/view/427.