@article{10_37236_258,
     author = {A. E. Brouwer and E. Spence},
     title = {Cospectral graphs on 12 vertices},
     journal = {The electronic journal of combinatorics},
     year = {2009},
     volume = {16},
     number = {1},
     doi = {10.37236/258},
     zbl = {1185.05097},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/258/}
}