Горбачова, Л., and Б. Христюк. “The Forecasting of Water Runoff of the Styr River for the Coming Years”. Visnyk of V. N. Karazin Kharkiv National University, Series "Geology. Geography. Ecology", no. 54, June 2021, pp. 155-63, doi:10.26565/2410-7360-2021-54-12.