KholoptsevА. V., and S. V. Nekos. “Comparative Analysis of Some Mathematical Models Robustness of Yearly Mean Dnepr Consumptions on Kiev Site”. Visnyk of V. N. Karazin Kharkiv National University Series «Еcоlogy», no. 944, 1, pp. 48-57, https://periodicals.karazin.ua/ecology/article/view/754.