1. Fizicheskie velichiny: Spravochnik (Physical Quantities: Handbook), Grigor’ev, I.S. and Meilikhov, E.Z., Eds., Moscow: Energoatomizdat, 1991.
2. Saleh, M.S., Ramli, A.T., Alajerami, Y., et al., Assessment of environmental 226Ra, 232Th and 40K concentrations in the region of elevated radiation background in Segamat District, Johr, Malaysia, J. Environ. Radioact., 2013, vol. 124, pp. 130–140.
3. Utkin, A.A., Assessment of the radiation situation in reference areas of agricultural lands of the Vladimir region, Radiats. Biol. Radioecol., 2022, vol. 62, no. 6, pp. 660–672. https://doi.org/10.31857/S0869803122060133
4. Gavrilova, I.P. and Kasimov, N.S., Praktikum po geokhimii landshafta (Workshop on landscape geochemistry), Moscow: Mosk. Univ., 1989.
5. Radiokhimicheskoe opredelenie udel’noi aktivnosti tseziya-137 i strontsiya-90 v probakh pishchevoi produktsii, pochvy, drugikh ob"ektov okruzhayushchei sredy i bioprobakh: metodicheskie rekomendatsii MR 2.6.1.0094-14 (Radiochemical Determination of Specific Activity of Cesium-137 and Strontium-90 in Samples of Food Products, Soil, Other Environmental Objects, and Bio-Samples: Methodical Recommendations MR 2.6.1.0094-14), Moscow: Federal’nyi tsentr gigieny i epidemiologii Rospotrebnadzora, 2014.