1. Rey, V. 1992 Propagation and local behaviour of normally incident gravity waves over varying topography.Eur. J. Mech B11,213–232.
2. Miles, J. 1991 Variational approximations for gravity waves in water of variable depth.J. Fluid Mech. 232,681–688.
3. Chamberlain, P. G. 1995 Symmetry relations and decomposition for the mild-slope equation.J. Engng Maths (to appear).
4. Chamberlain, P. G. 1991 Wave propagation on water of uneven depth. PhD thesis,University of Reading.
5. Booij, N. 1983 A note on the accuracy of the Mild-Slope equation.Coastal Engng 7,191–203.