1. A. G. Bulakh, Calculation of Mineral Formulae (Nedra, Moscow, 1964) [in Russian].
2. Classification and Diagnostics of Soils of the Soviet Union (Kolos, Moscow, 1977) [in Russian].
3. L. L. Shishov, V. D. Tonkonogov, I. I. Lebedeva, and M. I. Gerasimova, Classification and Diagnostic System of Russian Soils (Oikumena, Smolensk, 2004) [in Russian].
4. The X-Ray Identification and Crystal Structures of Clay Minerals, Ed. by G. Brown (Mineralogical Society, London, 1961; Mir, Moscow, 1965).
5. B. A. Sakharov and V. A. Drits, “Technique for determination of the content of smectite layers in the dispersed dioctahedral K-bearing micaceous minerals,” Lithol. Miner. Resour. 50, 50–79 (2015).