Shovkun, O. O., and M. A. Popirny. “Quality of Humus Substances in Sod-Podzolic Soil under Different Fertilization Systems”. AgroChemistry and Soil Science 97 (December 27, 2024): 53–60. Accessed July 16, 2026. https://agrochemsoilsci.org/index.php/journal/article/view/214.