%0 Journal Article
%A F. Ferschl
%T Linear Algebra and Matrix Theory -  Nering, E.D.
%J Metrika
%D 1965
%P 158-159
%V 9
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MET_1965__9_175264/
%F MET_1965__9_175264