TY  - JOUR
AU  - G. P. Gubanov
TI  - The approximation of continuous periodic functions of two variables by trigonometric polynomials
JO  - Izvestiâ vysših učebnyh zavedenij. Matematika
PY  - 1969
SP  - 30
EP  - 34
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IVM_1969_5_a3/
LA  - ru
ID  - IVM_1969_5_a3
ER  -