TY  - JOUR
AU  - P. V. Zaderej
TI  - Approximation of differentiable periodic functions of two variables by Fourier sums
JO  - Informatics and Automation
PY  - 1987
SP  - 114
EP  - 115
VL  - 180
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a62/
LA  - ru
ID  - TRSPY_1987_180_a62
ER  -