%0 Journal Article
%A R. R. Akopyan
%T Best approximation for the analytic continuation operator on the class of analytic functions in a~ring
%J Trudy Instituta matematiki i mehaniki
%D 2012
%P 3-13
%V 18
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TIMM_2012_18_4_a0/
%G ru
%F TIMM_2012_18_4_a0