%0 Journal Article
%A S. V. Konyagin
%T Connectedness of sets in best approximation problems
%J Doklady Akademii Nauk
%D 1981
%P 20-23
%V 261
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1981_261_1_a3/
%G ru
%F DAN_1981_261_1_a3