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3. Yu. N. Vodyanitskii, Heavy and Superheavy Metals and Metalloids in Polluted Soils (Moscow, 2009) [in Russian].
4. V. S. Gorbatov, “Stability and Transformation of Heavy Metal (Zn, Rb, Sd) Oxides in Soils,” Pochvovedenie, No. 1, 35–43 (1988).
5. V. A. Zhideeva, I. I. Vasenev, and A. P. Shcherbakov, “Fractionation of Pb, Cd, Ni, and Zn Compounds in Meadow-Chernozemic Soils Polluted by Emissions of the Accumulator Plant,” Pochvovedenie, No. 6, 725–733 (2002) [Eur. Soil Sci. 35 (6), 643–650 (2002)].