1. T. I. Moiseenko, Aquatic Ecotoxicology: Fundamental and Applied Aspects (Nauka, Moscow, 2009) [in Russian].
2. S. N. Gashev, Mammals in the Environmental Monitoring System (by the Example of Tyumen Oblast) (Izd-vo TyumGU, Tyumen, 2000).
3. M. N. Kazantseva, A. P. Kazantsev, and S. N. Gashev, Vestn. Ekol. Lesoved. i Landshaftoved., No. 2, 86 (2001).
4. I. V. Goncharov, Geochemistry of West Siberian Oils (Nedra, Moscow, 1987) [in Russian].
5. B. V. Testov and A. I. Taskaev, “Accumulation of Natural Radionuclides in the Animal Organism in Regions with Elevated Radioactivity,” in Technogenic Elements and the Animal Organism (Field Observations and the Experiment) (UNTs AN SSSR, Sverdlovsk, 1986), pp. 23–36 [in Russian].