%0 Journal Article
%A F. Harary
%A D. Cartwright
%T On the Coloring of Signed Graphs.
%J Elemente der Mathematik
%D 1968
%P 85-89
%V 23
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ELMA_1968__23_140892/
%F ELMA_1968__23_140892