1. Some aspects of the behaviour of granular materials at high pressures;Billam,1972
2. The physics of Experimental Method;Braddick,1963
3. Compressibility of sand at high pressure;De Souza,1958
4. Particle breakage characteristics of granular soils;Fukumoto;Soils and Foundations,1992
5. Crushing of soil particles;Hardin;ASCE, Journal of Geotech. Engrg,1985