TY  - JOUR
AU  - M. Sh. Shabozov
AU  - M. O. Akobirshoev
TI  - About Kolmogorov type of inequalities for periodic functions of two variables in $L_2$
JO  - Čebyševskij sbornik
PY  - 2019
SP  - 348
EP  - 365
VL  - 20
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CHEB_2019_20_2_a26/
LA  - ru
ID  - CHEB_2019_20_2_a26
ER  -