@article{1028989917, author = {Harary, Frank}, title = {On the notion of balance of a signed graph.}, journal = {Michigan Math. J.}, volume = {2}, number = {1}, year = {1953}, pages = { 143-146}, language = {en}, url = {http://dml.mathdoc.fr/item/1028989917} }
Harary, Frank. On the notion of balance of a signed graph.. Michigan Math. J., Tome 2 (1953) no. 1, pp. 143-146. http://gdmltest.u-ga.fr/item/1028989917/