TY  - JOUR
AU  - A. I. Stepanets
TI  - Best approximations of infinitely differentiable functions in the space~$L_s$
JO  - Matematičeskie zametki
PY  - 1987
SP  - 21
EP  - 32
VL  - 42
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1987_42_1_a2/
LA  - ru
ID  - MZM_1987_42_1_a2
ER  -