1. A. S. Abdulaeva, “Radioactivity of rocks, soils, natural waters of Dagestan and the effective doses caused by them,” Yug Ross.: Ekol., Razvit. 3, 89–106 (2012). https://doi.org/10.18470/1992-1098-2012-3-89-106
2. Activity of Radionuclides in Counting Samples. Measurement Technique on Gamma-Ray Spectrometers using the Software “SpectraLine” (Mendeleevo, 2014).
3. R. M. Aleksakhin, A. V. Vasiliev, V. G. Dikarev, etc., Agricultural Radiology, Ed. by R. M. Aleksakhin and N. A. Kornev (Ekologiya, Moscow, 1992) [in Russian].
4. Yu. A. Alexandrov, Fundamentals of Radiation Ecology (Marii. Gos. Univ., Yoshkar-Ola, 2007) [in Russian].
5. B. F. Aparin, G. A. Kasatkina, and N. N. Matinyan, Red Data Soils Book of the Leningrad Region (Aeroplan, St. Petersburg, 2007) [in Russian].