TY  - JOUR
AU  - V. È. Gheit
TI  - On the exactness of certain inequalities in approximation theory
JO  - Matematičeskie zametki
PY  - 1971
SP  - 571
EP  - 582
VL  - 10
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1971_10_5_a12/
LA  - ru
ID  - MZM_1971_10_5_a12
ER  -