@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/