TY  - JOUR
AU  - M. M. Dragilev
TI  - The order of the best approximation by linear combinations of elements of an extended basis to functions defined on a continuum
JO  - Doklady Akademii Nauk
PY  - 1961
SP  - 528
EP  - 530
VL  - 139
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1961_139_3_a2/
LA  - ru
ID  - DAN_1961_139_3_a2
ER  -