%0 Journal Article
%A Upke-Walther Schmincke
%T A Spectral Gap Theorem for Dirac Operators with Central Field.
%J Mathematische Zeitschrift
%D 1973
%P 351-356
%V 131
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1973__131_171902/
%F MZ_1973__131_171902