%0 Journal Article %A A. E. Brouwer %A E. Spence %T Cospectral graphs on 12 vertices %J The electronic journal of combinatorics %D 2009 %V 16 %N 1 %U http://geodesic.mathdoc.fr/articles/10.37236/258/ %R 10.37236/258 %F 10_37236_258