%0 Journal Article %A R. Beauwens %T Erratum. Factorization Iterative Methods, M-operators and H-Operators. (Num. Math. 31, 335-357 (1979)). %J Numerische Mathematik %D 1986 %P 457-458 %V 49 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1986__49_251451/ %F NUMA_1986__49_251451