%0 Journal Article %A W. Niethammer %A M. Eiermann %A ... %T Optimal Successive Overrelaxation Iterative Methods fo P-Cyclic Matrices. %J Numerische Mathematik %D 1990 %P 593-606 %V 57 %N 6-7 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1990__57_6-7_133468/ %F NUMA_1990__57_6-7_133468