Tatarnikov, V. O., D. S. Dairova, and M. A. Ocheretnyj. “Conceptual Model of the Pollution Balance of the Russian Sector of the Caspian Sea on the Example of Lead”. Proceedings of Voronezh State University. Series: Geography. Geoecology, no. 2, June 2022, pp. 111-7, doi:10.17308/geo.2022.2/9317.