TY  - JOUR
AU  - Đinh Dung
TI  - Approximation by trigonometric polynomials of functions of several variables on the torus
JO  - Sbornik. Mathematics
PY  - 1988
SP  - 247
EP  - 267
VL  - 59
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1988_59_1_a13/
LA  - en
ID  - SM_1988_59_1_a13
ER  -