TY  - JOUR
AU  - I. A. Shevchuk
TI  - Addendum to direct approximation theorems of S.\,M.~Nikol'skij type on an interval, and inverse theorems
JO  - Informatics and Automation
PY  - 1987
SP  - 230
EP  - 232
VL  - 180
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a142/
LA  - ru
ID  - TRSPY_1987_180_a142
ER  -