%0 Journal Article
%A K.Tukhliev
%T Mean-square approximation of functions by Fourier--Bessel series and the values of widths for some functional classes
%J Čebyševskij sbornik
%D 2016
%P 141-156
%V 17
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CHEB_2016_17_4_a10/
%G ru
%F CHEB_2016_17_4_a10