@article{02012638, title = {An algebraic framework of weighted directed graphs.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {2003}, year = {2003}, pages = {3657-3678}, doi = {10.1155/S0161171203302170}, zbl = {1031.05061}, language = {en}, url = {http://dml.mathdoc.fr/item/02012638} }
Leroux, Philippe. An algebraic framework of weighted directed graphs.. International Journal of Mathematics and Mathematical Sciences, Tome 2003 (2003) pp. 3657-3678. doi : 10.1155/S0161171203302170. http://gdmltest.u-ga.fr/item/02012638/