Skrylnyk, Ye. V., N. V. Maksymenko, Ya. S. Ryzhkova, and V. A. Ryzhkov. 2018. “Agroecological Characterization of Sewage Sludge of Kharkov”. Man and Environment. Issues of Neoecology, no. 1-2(29) (May), 112-18. https://doi.org/10.26565/1992-4224-2018-29-12.