%0 Journal Article %A M. Kisielewicz %T On the non-convergence of successive approximations in the Darboux problem for the equation $z''_{xy}=f(x,y,z)$ %J Colloquium Mathematicum %D 1977 %P 103-110 %V 38 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-38-1-103-110/ %R 10.4064/cm-38-1-103-110 %G en %F 10_4064_cm_38_1_103_110