1. Motion of waves in shallow water. Interaction between waves and sand bottoms;Bagnold,1946
2. Sand concentration in an oscillatory flow;Bakker,1975
3. Bottom friction and velocity distribution in an oscillatory flow with resulting current;Bakker,1977
4. Near bottom velocities in waves with a current;Bakker,1979
5. An Introduction to Fluid Dynamics;Batchelor,1970