1. A. F. Vadyunina, E. V. Shein, A. V. Kirichenko, et al., “Electrical Conductivity of Water-Unsaturated Soils and Pore Solutions,” Vestn. Mosk. Gos. Univ., Ser. 17: Pochvoved., No. 2, 42–49 (1984).
2. N. V. Verkhovtseva, E. Yu. Milanovskii, E. V. Shein, and Z. N. Tyugai, “Distribution of Microorganisms and Humic Substances by Particle-Size and Aggregate-Size Fractions in Chernozem,” in Materials of the IV Congr. of the Dokuchaev Soil Sci. Soc. (Nauka-Tsentr, Novosibirsk, 2004), Vol. 1, pp. 30–32 [in Russian].
3. R. Garrels and Ch. Christ, Solutions, Minerals, and Equilibria (Harper and Row, New York, 1965).
4. A. M. Globus, Experimental Hydrophysics of Soils (Gidrometeoizdat, Leningrad, 1969), 355 pp. [in Russian].
5. N. I. Gorbunov and I. G. Tsyurupa, “On the Problem of Uneven Concentrations of Solutions Separated from Clay Minerals and Soils,” Pochvovedenie, No. 3, 166–171 (1947).