TY  - JOUR
AU  - F. Harary
AU  - D. Cartwright
TI  - On the Coloring of Signed Graphs.
JO  - Elemente der Mathematik
PY  - 1968
SP  - 85
EP  - 89
VL  - 23
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ELMA_1968__23_140892/
ID  - ELMA_1968__23_140892
ER  -