TY  - JOUR
AU  - A. S. Romanyuk
TI  - Best Trigonometric and Bilinear Approximations of Classes of Functions of Several Variables
JO  - Matematičeskie zametki
PY  - 2013
SP  - 401
EP  - 415
VL  - 94
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_2013_94_3_a7/
LA  - ru
ID  - MZM_2013_94_3_a7
ER  -