1. Aitchison G. D. (1965). “Soil properties shear strength and consolidation.” Proc. 6th Int. Conf. SMFE University of Toronto Press Toronto 319–321.
2. Aitchison G. D. and Donald I. B. (1956). “Some preliminary studies of unsaturated soils.” Proc. 2nd ANZ Conf. SMFE Technical Publications for the New Zealand Institution of Engineers Wellington New Zealand 192–199.
3. Alonso E. E. Gens A. and Hight D. W. (1987). “Special problem soils.” General Rep. Proc. 9th European Conf. Soil Mechanics and Foundation Engineering Dublin 1087–1146.
4. American Society for Testing and Materials. (1968). “Standard test method for capillary-moisture relationships for coarse-and medium-textured soils by porous-plate apparatus.” STM D2325-68 Philadelphia.
5. American Society for Testing and Materials. (1972). “Standard test method for capillary-moisture relationships for fine-textured soils by pressure-membrane apparatus.” STM D3152-72 Philadelphia.