%0 Journal Article
%A Yakubov,  Sasun
%T Denseness of domains of differential operators in Sobolev spaces
%J Electronic journal of differential equations
%D 2002
%V 2002
%U http://geodesic.mathdoc.fr/item/EJDE_2002__2002__a154/
%G en
%F EJDE_2002__2002__a154