2) De Beer, E.E. and Carpentier R. (1977): Discussion on "Methods to estimate lateral force acting on stabilizing piles," by Ito, T. and Matsui, T., Soils and Foundations, Vol. 17, No. 1, pp. 68-82.
4) Ito, T. and Matsui, T. (1978): "Methods to estimate lateral force acting on stabilizing piles,"o Closure, Soils and Foundations, Vol.18, No.2, pp. 41-44.