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2. A. N. Silant'ev and I. G. Shkuratova, Detecting Industrial Soil Contaminants and Atmospheric Fallout against the Global Contamination Background [in Russian], Gidrometeoizdat, Leningrad (1983).
3. I. V. Molchanova, M. Ya. Chebotina, E. N. Karavaeva, and N. V. Kulikov, ?The influence of plants' leaf-shedding and decay conditions on the migration of radionuclides in soil,? in: Problems of Forest Ecology [in Russian], Gidrometeoizdat, Moscow (1979).
4. F. I. Pavlotskaya, Migration of Radioactive Products of Global Fallout in Soils [in Russian], Atomizdat, Moscow (1974).