%0 Journal Article
%A V. Yu. Popov
%T Sharp inequalities for best mean square approximations in a~space of Bessel potentials
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1982
%P 83-86
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1982_1_a14/
%G ru
%F IVM_1982_1_a14