%0 Journal Article %A D. Braess %A P. Peisker %T A Conjugate Gradient Method and a Multigrid Algorithm for Morley' s Finite Element Approximation of the Biharmonic Equation. %J Numerische Mathematik %D 1986 %P 567-586 %V 50 %I mathdoc %U http://geodesic.mathdoc.fr/item/NUMA_1986__50_133173/ %F NUMA_1986__50_133173