TY  - JOUR
AU  - A. Khatamov
TI  - On~rational approximations of functions with a~convex derivative
JO  - Sbornik. Mathematics
PY  - 1975
SP  - 239
EP  - 250
VL  - 27
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1975_27_2_a5/
LA  - en
ID  - SM_1975_27_2_a5
ER  -