Крайнюков, О. М., and В. Д. Тімченко. “Environmental Improvement of Comprehensive Assessment of Water Quality and Water Bodies”. Visnyk of V. N. Karazin Kharkiv National University Series «Еcоlogy», no. 14, Sept. 2016, pp. 9-14, doi:10.26565/1992-4259-2016-14-01.