1. Recommendation for Design and Construction Practice of Earth Retaining for Excavation;Architectural Institute of Japan,1988
2. Earth pressures on flexible structures—a state of the art report;Bjerrum;Proc of 5th ECSMFE,1972
3. Stability of strutted excavations in clay;Bjerrum;Géotechnique,1956
4. State of the art report on stress-deformation and strength characteristics;Ladd;Proc. of 9th ICSMFE,1977
5. Soil Mechanics, SI Version;Lambe,1969