%0 Journal Article
%A V. I. Burenkov
%T The approximation of functions in the space $W_p^r(\Omega )$ by compactly supported functions for an arbitrary open set~$\Omega $
%J Informatics and Automation
%D 1974
%P 51-63
%V 131
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TRSPY_1974_131_a5/
%G ru
%F TRSPY_1974_131_a5