Khristenko, A.O., V.S. Shapovalova, and A.P. Neshta. “To Problems of Improve the Diagnostics of Potassium Status of Soils”. AgroChemistry and Soil Science 84 (November 13, 2015): 49–54. Accessed June 30, 2026. https://agrochemsoilsci.org/index.php/journal/article/view/183.