1. Blaney G. W. Kausel E. and Roesset J. M. (1976). “Dynamic stiffness of piles.” Second Internal. Conf. Num. Methods in Geomech. ASCE 1 001.
2. Graff K. F. (1975). Wave motion in elastic solids . Ohio State University Press 649.
3. Mitwally H. and Novak M. (1985). “Pile driving analysis.” Proc. Tenth Canadian Congress of Appl. Mech. London Ontario Jun. A‐325–326.
4. Impedance Functions of Piles in Layered Media