TY  - JOUR
AU  - È. M. Galeev
TI  - Approximation of classes of periodic functions of several variables by nuclear operators
JO  - Matematičeskie zametki
PY  - 1990
SP  - 32
EP  - 41
VL  - 47
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1990_47_3_a4/
LA  - ru
ID  - MZM_1990_47_3_a4
ER  -