TY  - JOUR
AU  - B. S. Kashin
TI  - On approximation properties of complete orthonormal systems
JO  - Informatics and Automation
PY  - 1985
SP  - 187
EP  - 191
VL  - 172
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TRSPY_1985_172_a12/
LA  - ru
ID  - TRSPY_1985_172_a12
ER  -