%0 Journal Article %A B. Palczewski %T Existence and uniqueness of solutions of the Darboux problem for the equation ${∂^3u \over ∂x_1 ∂x_2 ∂x_3} = {f(x_1, x_ 2, x_ 3, u, {∂u \over ∂x_1}, {∂u \over ∂x_2}, {∂u \over ∂x_3}, {∂^2u \over ∂x_1 ∂x_2}, {∂^2u \over ∂x_1, ∂x_3}, {∂^2u \over ∂x_2 ∂x_3}) %J Annales Polonici Mathematici %D 1963 %P 267-277 %V 13 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-13-3-267-277/ %R 10.4064/ap-13-3-267-277 %G en %F 10_4064_ap_13_3_267_277