TY  - JOUR
AU  - S. B. Vakarchuk
TI  - On approximation of functions of two variables by generalized polynomials
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1987
SP  - 77
EP  - 78
VL  - 180
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TM_1987_180_a39/
LA  - ru
ID  - TM_1987_180_a39
ER  -