KRAYNUKOVA, A. N.; CHISTYAKOVA, E. O.; KRAINIUKOV, A. N. Complex assessment of water body environmental state (exemplified by Seversky Donets river basin). Visnyk of V. N. Karazin Kharkiv National University. Series Еcоlogy, n. 944, p. 61-71, 31 Mar. 2014.