1. A hollow cylinder torsional simple shear apparatus capable of a wide range of shear strain measurement;Ampadu;Geotechnical Testing Journal, ASTM,1993
2. Undrained behaviour of kaolin in torsional simple shear;Ampadu,1991
3. An automated stress path control triaxial system;Ampadu;Geotechnical Testing Journal,1989
4. Procedures used to obtain soil parameters for foundation engineering in the North Sea;Anderson;Marine Geotechnology,1979
5. The NGI 54 mm samplers for undisturbed sampling of clays and representative sampling of coarser materials;Andersen,1979