%0 Journal Article %A L. P. Vlasov %A G. M. Ustinov %T Closed faces of the unit ball in Banach spaces %J Doklady Akademii Nauk %D 1983 %P 529-531 %V 273 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1983_273_3_a2/ %G ru %F DAN_1983_273_3_a2