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2. É. Karl'e, Method of Quantitative Estimation of Uranium Deposits, Atomizdat, Moscow (1966).
3. I. M. Khaikovich and V. L. Shashkin, γ-Testing of Radioactive Ores. Theory and Method [in Russian], Énergoatomizdat, Moscow (1982).
4. M. V. Shumilin and V. A. Vikent'ev, Calculation of Uranium Reserves [in Russian], Nedra, Moscow (1982).
5. G. F. Novikov, Radiometric Exploration [in Russian], Nedra, Leningrad (1989).