%0 Journal Article %A S. V. Shil'man %T Convergence of iterative algorithms for quadratic optimization %J Doklady Akademii Nauk %D 1983 %P 805-809 %V 272 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1983_272_4_a8/ %G ru %F DAN_1983_272_4_a8