%0 Journal Article %A S. Prößdorf %A B. Silbermann %T General convergence theorems on projection methods for operator equations in Banach spaces %J Doklady Akademii Nauk %D 1976 %P 527-529 %V 230 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1976_230_3_a6/ %G ru %F DAN_1976_230_3_a6