TY  - JOUR
AU  - B. S. Kashin
TI  - General orthonormal systems and certain problems of approximation theory
JO  - Matematičeskie zametki
PY  - 1979
SP  - 299
EP  - 315
VL  - 26
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1979_26_2_a15/
LA  - ru
ID  - MZM_1979_26_2_a15
ER  -