TY  - JOUR
AU  - M.-B. Babayev
TI  - On the order of approximation of Sobolev class $W_q^r$ by bilinear forms in $L_p$ for $1\le q\le2\le p\le\infty$
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1992
SP  - 21
EP  - 40
VL  - 198
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TM_1992_198_a1/
LA  - ru
ID  - TM_1992_198_a1
ER  -