TY  - JOUR
AU  - M.-B. Babayev
TI  - The approximation of sobolev classes of functions by sums of products of functions of fewer variables
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1987
SP  - 30
EP  - 32
VL  - 180
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TM_1987_180_a8/
LA  - ru
ID  - TM_1987_180_a8
ER  -