Mauerer, J. and Hutter, K. and Diebels, and Hutter, K. and Diebels, (1996):
Viscous effects in internal waves of two-layered fluids with variable depth.
In: European journal of mechanics. B 15 (1996), No. 4, S. 445-470, [Article]

Bauer, Georg and Diebels, and Hutter, K. (1995):
Nonlinear internal waves in ideal rotating basins.
In: Geophysical and astrophysical fluid dynamics. 78 (1995), S. 21-46, [Article]