1. R. M. Aleksakhin and M. A. Naryshkin, Migration of Radionuclides in Forest Biogeocenoses (Nauka, Moscow, 1977) [in Russian].
2. SanPiN 2.3.2.1078-01, SanPiN 2.3.2. 2650-10: Hygienic Requirements to the Safety and Nutritive Value of Food (Moscow, 2001) [in Russian].
3. E. A. Dmitriev, Mathematical Statistics in Soil Science (Moscow State Univ., Moscow, 1995) [in Russian].
4. A. K. Dyunin, In the Snow Kingdom (Nauka, Novosibirsk, 1983) [in Russian].
5. Join Manual for Agriculture in Radioactively Polluted Areas of Belarus and Russian Federation (Minsk, 2004) [in Russian].