1. Structural and mechanical properties of typical thick chernozem;Abrukova;Pochvovedenie,1971
2. Aitchison , G.D. 1957 The strength of quasi-saturated and unsaturated soils in relation to the pressure deficiency in the pore water Proceedings of the IVth International Conference on Soil Mechanics and Foundation Engineering 135 139
3. Thixotropics changes with aging of synthetic soil aggregates;Blake;Soil Science Society of America Proceedings,1970
4. Influence of soil bulk density on matric potential;Box;Soil Science Society of America Proceedings,1962
5. Soil structure in relation to soil suction (pF);Croney;Journal of Soil Science,1954