%0 Journal Article %A B. E. Veits %T Orthogonal systems of elements in smooth Banach spaces %J Doklady Akademii Nauk %D 1970 %P 9-12 %V 192 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1970_192_1_a0/ %G ru %F DAN_1970_192_1_a0