@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/