@article{00912020, title = {Integral representations of graphs.}, journal = {Portugaliae Mathematica. Nova S\'erie}, volume = {53}, year = {1996}, pages = {137-142}, zbl = {0853.05076}, language = {en}, url = {http://dml.mathdoc.fr/item/00912020} }
Silva, Fernando C. Integral representations of graphs.. Portugaliae Mathematica. Nova Série, Tome 53 (1996) pp. 137-142. http://gdmltest.u-ga.fr/item/00912020/