%0 Journal Article %A Yu. I. Lyubich %T Rates of convergence of coordinate relaxation for a quadratic functional %J Doklady Akademii Nauk %D 1967 %P 37-39 %V 173 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1967_173_1_a8/ %G ru %F DAN_1967_173_1_a8