%0 Journal Article
%A J. Verdera
%A P.V. Paramonov
%T Approximation by Solutions of Elliptic Equations on Closed Subsets of Euclidean Space.
%J Mathematica Scandinavica
%D 1994
%P 249-259
%V 74
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MS2_1994__74_1_167294/
%F MS2_1994__74_1_167294