%0 Journal Article %A El-Sayed, W.Gomaa %T Nonlinear functional integral equations of convolution type. %J Portugaliae mathematica %D 1997 %P 449-456 %V 54 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1997__54_4_47969/ %G en %F PORMA_1997__54_4_47969