@article{JAC_2010__31_4_a4,
     author = {Blau, Harvey I.},
     title = {Association schemes, fusion rings, {C-algebras,} and reality-based algebras where all nontrivial multiplicities are equal},
     journal = {Journal of Algebraic Combinatorics},
     pages = {491--499},
     publisher = {mathdoc},
     volume = {31},
     number = {4},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2010__31_4_a4/}
}