@article{05686759, title = {Cospectral graphs on 12 vertices.}, journal = {The Electronic Journal of Combinatorics [electronic only]}, volume = {16}, year = {2009}, zbl = {1185.05097}, language = {en}, url = {http://dml.mathdoc.fr/item/05686759} }
Brouwer, A.E.; Spence, E. Cospectral graphs on 12 vertices.. The Electronic Journal of Combinatorics [electronic only], Tome 16 (2009) . http://gdmltest.u-ga.fr/item/05686759/