O. Ondar, Sergey, Aldynay O. Khovalyg, Urana V. Ondar, and Natalya I. Sodnam. 2018. “Monitoring of the State of the Left-Bank Confluents of the Upper Yenisei Basin in the Zone Of Impact of the Coal Industry Enterprise”. International Journal of Engineering & Technology 7 (3.19): 206-14. https://doi.org/10.14419/ijet.v7i3.19.17338.