TY  - JOUR
AU  - K. V. Runovski
TI  - Trigonometric polynomial approximation, $K$-functionals and generalized moduli of smoothness
JO  - Sbornik. Mathematics
PY  - 2017
SP  - 237
EP  - 254
VL  - 208
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_2017_208_2_a3/
LA  - en
ID  - SM_2017_208_2_a3
ER  -