%0 Journal Article %A Dzagnidze, O. %T A radial derivative with boundary values of the spherical Poisson integral. %J Georgian Mathematical Journal %D 1999 %P 19-32 %V 6 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/GMJ_1999__6_1_48248/ %G en %F GMJ_1999__6_1_48248