TY  - JOUR
AU  - N. P. Korneichuk
TI  - A note on Jackson's theorem for differentiable functions
JO  - Matematičeskie zametki
PY  - 1972
SP  - 517
EP  - 522
VL  - 12
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1972_12_5_a2/
LA  - ru
ID  - MZM_1972_12_5_a2
ER  -