TY  - JOUR
AU  - V. I. Burenkov
TI  - The approximation of functions in the space $W_p^r(\Omega )$ by compactly supported functions for an arbitrary open set~$\Omega $
JO  - Informatics and Automation
PY  - 1974
SP  - 51
EP  - 63
VL  - 131
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TRSPY_1974_131_a5/
LA  - ru
ID  - TRSPY_1974_131_a5
ER  -