%0 Journal Article %A Gripenberg, Gustaf %T Generalized viscosity solutions of elliptic PDEs and boundary conditions %J Electronic Journal of Differential Equations %D 2006 %V 2006 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2006__2006__a2/ %G en %F EJDE_2006__2006__a2