1. Exercises and Methodical Developments on Hydrological Forecasts;Befany,1983
2. Principles of Geographical Information Systems for Land Resources Assessment;Burrough,1998
3. Topographic controls of soil moisture distribution;Burt;J. Soil. Sci.,1985
4. Soil moisture in connection with relief of terrain;Fedoseev;Trans. KazNIGMI,1959
5. Accumulation of water in soils of different forest-steppe complexes as factor of their agroeconomic grouping;Fishman;Pochvovedenie,1968