TY  - JOUR
AU  - S. N. Kudryavtsev
TI  - Approximating one class of finitely differentiable functions by another
JO  - Izvestiya. Mathematics 
PY  - 1997
SP  - 347
EP  - 362
VL  - 61
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1997_61_2_a5/
LA  - en
ID  - IM2_1997_61_2_a5
ER  -