1. Sand movement by waves;; some small-scale experiments with sand of very low density;Bagnold;J. Inst. Ci Eng.,1947
2. On the influence of viscosity on waves and currents;Hough;Proc. London Math. Soc (1),1896
3. Breakers and surf, principles of forecasting;Hydrographic Office,1944
4. The graphical construction of refraction diagrams;Johnson,1948
5. Lamb, H., , Hydrodynamics, 6 Cambridge University Press, 1932,