TY  - JOUR
AU  - A. L. Garkavi
TI  - On Existence of Best Approximation of a~Function of Two Variables by Sums of Plane Waves
JO  - Informatics and Automation
PY  - 1997
SP  - 130
EP  - 136
VL  - 219
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TRSPY_1997_219_a10/
LA  - ru
ID  - TRSPY_1997_219_a10
ER  -