TY  - JOUR
AU  - S. M. Nikol'skii
TI  - On imbedding, continuation and approximation theorems for differentiable functions of several variables
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1961
SP  - 55
EP  - 104
VL  - 16
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1961_16_5_a1/
LA  - en
ID  - RM_1961_16_5_a1
ER  -