TY  - JOUR
AU  - V. A. Popov
AU  - P. P. Petrushev
TI  - The exact order of the best approximation to convex functions by~rational functions
JO  - Sbornik. Mathematics
PY  - 1977
SP  - 245
EP  - 251
VL  - 32
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1977_32_2_a4/
LA  - en
ID  - SM_1977_32_2_a4
ER  -