1. Wehausen, J. V. & Laitone, E. V. 1960 Handbuch der Physik , vol. 9 (ed. S. Flugge ).Berlin:Springer-Verlag.
2. Newman, J. N. 1962 J. Ship Res. 6,10.
3. Miles, J. W. 1967 J. Fluid Mech. 28,755.
4. Black, J. L. & Mei, C. C. 1970 Tech. Report no. 121, M.I.T. Water Resources and Hydrodynamics Laboratory.
5. Garrett, C. J. R. 1971 J. Fluid Mech. 46,129.