%0 Journal Article
%A J. Verdera
%A M. S. Mel'nikov
%A P. V. Paramonov
%T $C^1$-approximation and extension of subharmonic functions
%J Sbornik. Mathematics
%D 2001
%P 515-535
%V 192
%N 4
%U http://geodesic.mathdoc.fr/item/SM_2001_192_4_a1/
%G en
%F SM_2001_192_4_a1