%0 Journal Article %A A. HADJIDIMOS %T The Numerical Solution of a Model Problem Biharmonic Equation by Using Extrapolated Altering Direction Implicit Methods. %J Numerische Mathematik %D 1971 %P 301-317 %V 17 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1971__17_132079/ %F NUMA_1971__17_132079