%0 Journal Article
%A R. Grübel
%T A Minimal Characterization of the Covariance Matrix.
%J Metrika
%D 1988
%P 49-52
%V 35
%N 3-4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MET_1988__35_3-4_176152/
%F MET_1988__35_3-4_176152