%0 Journal Article
%A Bérard, Pierre H.
%A Helffer, Bernard
%T On Courant's Nodal Domain Property for Linear Combinations of Eigenfunctions. I
%J Documenta mathematica
%D 2018
%P 1561-1585
%V 23
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DOCMA_2018__23__a20/
%G en
%F DOCMA_2018__23__a20