Deep excavation in soft clay. Performance of an anchored diaphragm wall : Hata, S; Ohta, H; Yoshida, S. Kitamura, H; Honda, H Proc 5th International Conference on Numerical Methods in Geomechanics, Nagoya, 1–5 April 1985V2, P725–730. Publ Rotterdam: A. A. Balkema, 1985