%0 Journal Article %A B. V. Godun %A S. L. Troyanski %T Norm-attaining operators, and the geometry of the unit sphere of a %J Doklady Akademii Nauk %D 1990 %P 777-779 %V 314 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1990_314_4_a0/ %G ru %F DAN_1990_314_4_a0