An analysis of sinusoidal waves in two-layer liquid
... жидкости // Физика атмосферы и океана. 1967. Т. 111, № 3. С. 284—290.
Zaitsev A., Kulakov P.
two-layer liquid, sinusoidal waves, dispersion relations, Boussinesq approximation, phase velocity of short and long waves, new technique
32-43
