1. Modified Bromhead ringshear apparatus;Anayi;ASTM Geotech. Testing J.,1989
2. Comparison of alternative methods of measuring the residual strength of a clay;Anayi,1990
3. Landsliding and land use in the loess of Gansu Province, China;Billard;Z. Geomorphol.,1993
4. Residual strength of soils at low normal stresses;Boyce,1988
5. A simple ring shear apparatus;Bromhead;Ground Eng.,1979