TY - JOUR AU - Jensen, Robert R. TI - Viscosity solutions of elliptic partial differential equations JO - Documenta mathematica PY - 1998 SP - 31 EP - 38 VL - ICM Berlin 1998, Vol. III PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DOCMA_1998__S9__a75/ LA - en ID - DOCMA_1998__S9__a75 ER -