TY  - JOUR
AU  - S. N. Kudryavtsev
TI  - Approximation of the derivatives of finitely smooth functions belonging to non-isotropic classes
JO  - Izvestiya. Mathematics 
PY  - 2004
SP  - 77
EP  - 123
VL  - 68
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_2004_68_1_a3/
LA  - en
ID  - IM2_2004_68_1_a3
ER  -