TY  - JOUR
AU  - V. N. Rusak
TI  - Sharp order estimates for best rational approximations in classes of functions representable as convolutions
JO  - Sbornik. Mathematics
PY  - 1987
SP  - 491
EP  - 513
VL  - 56
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1987_56_2_a12/
LA  - en
ID  - SM_1987_56_2_a12
ER  -