1. P. U. Bakhtin, Physicomechanical and Technological Properties of Major Soil Types in the Soviet Union (Kolos, Moscow, 1969) [in Russian].
2. G. E. P. Box and G. Jenkins, Time Series Analysis, Forecasting and Control (Holden-Day, San Francisco, 1970).
3. D. I. Burov, “The impact of silt particles in the plow layer on the fertility of chernozemic soils in the Trans-Volga region,” Pochvovedenie, No. 12, 11–19 (1954).
4. V. F. Val’kov, Soil Ecology of Agricultural Crops (Agropromizdat, Moscow, 1986) [in Russian].
5. S. A. Verigo and L. A. Razumova, Soil Moisture and Its Meaning in Agricultural Production (Gidrometeoizdat, Leningrad, 1963) [in Russian].