BEZSONNYI, V. L.; TRETYAKOV , O. V.; PLYATSUK, L. D.; NEKOS, A. N. Entropy approach to assessment of the ecological state of a water course. Visnyk of V. N. Karazin Kharkiv National University series «Еcоlogy», n. 27, p. 6-19, 25 Nov. 2022.