%0 Journal Article %A Reinhard Scholz %T Numerical Solution of the Obstacle Problem by the Penalty Method. Part II. Time-Dependent Problem. %J Numerische Mathematik %D 1986 %P 255-268 %V 49 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1986__49_133111/ %F NUMA_1986__49_133111