Kogan, R. M., Nazarov, I. M., & Fridman, S. D. (1971). Gamma spectrometry of natural environments and formations: Theory of the method applications to geology and geophysics. Israel Program for Scientific Translations; [available from the U.S. Dept. of Commerce, National Technical Information Service, Springfield, Va.].

Kogan, R. M., I. M. Nazarov, a Sh. D. Fridman. Gamma Spectrometry of Natural Environments and Formations: Theory of the Method Applications to Geology and Geophysics. Jerusalem: Israel Program for Scientific Translations; [available from the U.S. Dept. of Commerce, National Technical Information Service, Springfield, Va.], 1971.

Kogan, R. M., et al. Gamma Spectrometry of Natural Environments and Formations: Theory of the Method Applications to Geology and Geophysics. Israel Program for Scientific Translations; [available from the U.S. Dept. of Commerce, National Technical Information Service, Springfield, Va.], 1971.