%0 Journal Article %A S. M. El-Sayed %T On the Multi-Integral Iteration Methods for Solving a Non-Linear Differential Methods %J Mathematica balkanica %D 1999 %P 99 %V 13 %N 1-2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_1999_13_1-2_a9/ %F MABA_1999_13_1-2_a9