1. L. N. Aleksandrova and O. A. Naidenova, Laboratory Practicum in Soil Science (Kolos, Leningrad, 1976), 279 pp. [in Russian].
2. V. A. Bol’shakov, V. P. Belobrov, and L. L. Shishov, Thesaurus. Terms, Definitions, and Reference Material on Ecology, Geography, and Classification of Soils (Pochv. Inst. im. V.V. Dokuchaeva, Moscow, 2004), 138 pp. [in Russian].
3. R. O. Butovskii, “Heavy Metals as Technogenic Chemical Contaminants and Their Toxicity for Soil Invertebrates,” Agrokhimiya, No. 4, 73–91 (2005).
4. Yu. N. Vodyanitskii, Manganese Oxides in Soils (Pochv. Inst. im. V.V. Dokuchaeva, Moscow, 2005), 95 pp. [in Russian].
5. Yu. N. Vodyanitskii, A. T. Savichev, A. A. Vasil’ev, et al., “Contents of Heavy Alkaline-Earth (Sr, Ba) and Rare-Earth (Y, La, Ce) Metals in Technogenically Contaminated Soils” Pochvovedenie, No. 7 (2010) [Eur. Soil Sci. 43 (7), (2010)].