%0 Journal Article
%A V. A. Popov
%A P. P. Petrushev
%T The exact order of the best approximation to convex functions by~rational functions
%J Sbornik. Mathematics
%D 1977
%P 245-251
%V 32
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1977_32_2_a4/
%G en
%F SM_1977_32_2_a4