TY  - JOUR
AU  - V. I. Ivanov
TI  - Local approximation of periodic functions by linear polynomial methods
JO  - Doklady Akademii Nauk
PY  - 1975
SP  - 523
EP  - 524
VL  - 224
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1975_224_3_a5/
LA  - ru
ID  - DAN_1975_224_3_a5
ER  -