%0 Journal Article %A J.S. MAYBEE %T Some Structural Theorems for Partial Difference Operators. %J Numerische Mathematik %D 1965 %P 66-72 %V 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1965__7_131638/ %F NUMA_1965__7_131638