Electronic Journal of Differential Equations, Vol. 2009(2009), No. 82, pp. 1-9. Title: On the Cauchy-problem for generalized Kadomtsev-Petviashvili-II equations Author: Axel Grunrock (Rheinische Friedrich-Wilhelms-Univ., Germany) Abstract: The Cauchy-problem for the generalized Kadomtsev-Petviashvili-II equation $$ u_t + u_{xxx} + \partial_x^{-1}u_{yy}= (u^l)_x, \quad l \ge 3, $$ is shown to be locally well-posed in almost critical anisotropic Sobolev spaces. The proof combines local smoothing and maximal function estimates as well as bilinear refinements of Strichartz type inequalities via multilinear interpolation in $X_{s,b}$-spaces. Submitted April 9, 2009. Published July 10, 2009. Math Subject Classifications: 35Q53. Key Words: Cauchy-problem; local well-posedness; generalized KP-II equations.