%0 Journal Article %A V. S. Rublev %T A special class of finite-dimensional subspaces of a Banach space %J Doklady Akademii Nauk %D 1969 %P 1038-1040 %V 184 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1969_184_5_a4/ %G ru %F DAN_1969_184_5_a4