1. McWilliams, J.C. and Flierl, G.R.: Optimal quasi-geostrophic wave analysis of MODE array data. Deep-Sea Res. 23, 285–300, (1976).
2. Dickinson, R.E.: Rossby waves - Long-period oscillations of oceans and atmospheres. Ann. Rev. Fluid Mech. 10, 159–195, (1978).
3. Dugan, J.P.: Oceanography in underwater acoustics. In: Ocean Acoustics, J.A. DeSanto ( Ed. ), Springer-Verlag, 1979.
4. Garrett, C. and Munk, W.: Internal waves in the ocean. Ann.Rev. Fluid Mech. 11, 339–369 (1979).
5. Phillips, O.M.: The dynamics of the upper ocean. Cambridge Univ. Press. 1969.