%0 Journal Article %A V.I. Oliker %A L.D. Prussner %T On the Numerical Solution of the Equation ....-(....) = f and Its Discretizations, I. %J Numerische Mathematik %D 1989 %P 271-294 %V 54 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1989__54_3_133318/ %G en %F NUMA_1989__54_3_133318