%0 Journal Article %A G. M. Vainikko %T On the smoothness of the solutions of multidimensional weakly singular integral equations %J Sbornik. Mathematics %D 1991 %P 585-600 %V 68 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1991_68_2_a12/ %G en %F SM_1991_68_2_a12