%0 Journal Article
%A M. Sh. Shabozov
%A M. O. Akobirshoev
%T About Kolmogorov type of inequalities for periodic functions of two variables in $L_2$
%J Čebyševskij sbornik
%D 2019
%P 348-365
%V 20
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CHEB_2019_20_2_a26/
%G ru
%F CHEB_2019_20_2_a26