%0 Journal Article
%A Heinz-Willi Goelden
%T On Non-Degeneracy of the Ground State of Schrödinger Operators.
%J Mathematische Zeitschrift
%D 1977
%P 239-248
%V 155
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1977__155_172560/
%F MZ_1977__155_172560