Gololobova, O. O., and V. V. Dorogan. “Ecological Assessment of Quality of Surface Water of Small and Medium Rivers of Poltava Region”. Man and Environment. Issues of Neoecology 31, no. 31 (July 15, 2019): 84-95. Accessed May 6, 2024. https://periodicals.karazin.ua/humanenviron/article/view/13300.