%0 Journal Article
%A V. V. Arestov
%A A. A. Seleznev
%T Best $L^2$-Extension of Algebraic Polynomials from the Unit Euclidean Sphere to a Concentric Sphere
%J Trudy Instituta matematiki i mehaniki
%D 2020
%P 47-55
%V 26
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TIMM_2020_26_2_a2/
%G ru
%F TIMM_2020_26_2_a2