A new way of solving the problem of the sinusoidal waves on the surface of a homogeneous perfect fluid
... long-wave approximation.
1. Сретенский Л. Н. Теория волновых движений идеальной жидкости. М., 1977.
Zaitsev A., Kulakov P.
homogeneous ideal fluid, a new method of studying of sinusoidal waves, horizontal and vertical components of velocity, pressure, long-wave approach
48-55