1. Yu. N. Vodyanitskii, I. O. Plekhanova, E. V. Prokopov- ich, and A. T. Savichev, “Soil Contamination with Emissions of Non-Ferrous Metallurgical Plants,” Eur. Soil Sci. 44(2), 217–226 (2011).
2. Hygienic Norm 2.1.7.020-94. Tentatively Permissible Concentrations (TPCs) of Heavy Metals and Arsenic in Soils, (Moscow, 1994) [in Russian].
3. Hygienic Norm 2.1.7.020-94. Tentatively Permissible Concentrations (TPCs) of Heavy Metals and Arsenic in Soils. Supplement to the List of MPCs and TPCs in Soils (Moscow, 1995) [in Russian].
4. Hygienic Norm 2.1.7.2041-06. Maximum Permissible Concentrations of Chemical Substances in Soil (Moscow, 2006) [in Russian].
5. Hygienic Norm 2.1.7.2042-06. Tentatively Permissible Concentrations of Chemical Substances in Soil (Moscow, 2006) [in Russian].