A. Debouard et Jc. Saut, SYMMETRIES AND DECAY OF THE GENERALIZED KADOMTSEV-PETVIASHVILI SOLITARY WAVES, SIAM journal on mathematical analysis, 28(5), 1997, pp. 1064-1085
We prove that the solitary waves of the generalized Kadomtsev-Petviash
vili equations, when they exist, are cylindrical with respect to the t
ransverse variables and decay with an optimal algebraic rate.