%0 Journal Article
%A S. B. Vakarchuk
%A M. Sh. Shabozov
%A M. R. Langarshoev
%T On the best mean square approximations by entire functions of exponential type in $L_2(\mathbb R)$ and mean $\nu$-widths of some functional classes
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 2014
%P 30-48
%N 7
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_2014_7_a2/
%G ru
%F IVM_2014_7_a2