TY  - JOUR
AU  - S. A. Telyakovskii
TI  - Approximation of differentiable functions by de la Vall\'ee Poussin's sums
JO  - Doklady Akademii Nauk
PY  - 1958
SP  - 426
EP  - 429
VL  - 121
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1958_121_3_a7/
LA  - ru
ID  - DAN_1958_121_3_a7
ER  -