TY  - JOUR
AU  - M. Babayev
TI  - Approximation to the Sobolev classes $W_q^r$ of functions of several variables by bilinear forms in $L_p$ for $2\le q\le p\le\infty$
JO  - Matematičeskie zametki
PY  - 1997
SP  - 18
EP  - 34
VL  - 62
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1997_62_1_a2/
LA  - ru
ID  - MZM_1997_62_1_a2
ER  -