%0 Journal Article
%A V. N. Rusak
%T Sharp order estimates for best rational approximations in classes of functions representable as convolutions
%J Sbornik. Mathematics
%D 1987
%P 491-513
%V 56
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1987_56_2_a12/
%G en
%F SM_1987_56_2_a12