%0 Journal Article %A V. D. Milman %T The basis structure of a $B$-space and properties of the sphere which are invariant relative to isomorphisms %J Doklady Akademii Nauk %D 1968 %P 779-782 %V 179 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1968_179_4_a6/ %G ru %F DAN_1968_179_4_a6