Kirsanov, A. K., E. P. Volkov, N. A. Shkaruba, N. V. Nikolaeva, and U. R. Teshaev. “Issues of Market Monopolization in the Mining of Non-Metallic Minerals in Transition Economies”. Journal of Degraded and Mining Lands Management, vol. 9, no. 3, Apr. 2022, pp. 3475-86, doi:10.15243/jdmlm.2022.093.3475.