ШАКІРЗАНОВА, Ж. Р., and Ю. С. МЕДВЕДЄВА. “The Method Annual Forecasting of Filling the Lakes Ukrainian Danube During Spring Flood”. Visnyk of V. N. Karazin Kharkiv National University. Series Еcоlogy, no. 1147, 1, pp. 9-13, https://periodicals.karazin.ua/ecology/article/view/3914.