%0 Journal Article %A Efendiev, M.A. %A Schmitz, Hermann %A Wendland, Wolfgang L. %T On some nonlinear potential problems %J Electronic Journal of Differential Equations %D 1999 %V 1999 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_1999__1999__a34/ %G en %F EJDE_1999__1999__a34