TY  - JOUR
AU  - N. P. Korneichuk
TI  - On the existence of a linear polynomial operator giving the best approximation on a class of functions
JO  - Doklady Akademii Nauk
PY  - 1962
SP  - 25
EP  - 27
VL  - 143
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1962_143_1_a5/
LA  - ru
ID  - DAN_1962_143_1_a5
ER  -