@article{JAC_2007__25_4_a2,
     author = {Martin, William J. and Muzychuk, Mikhail and Williford, Jason},
     title = {Imprimitive cometric association schemes: constructions and analysis},
     journal = {Journal of Algebraic Combinatorics},
     pages = {399--415},
     publisher = {mathdoc},
     volume = {25},
     number = {4},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2007__25_4_a2/}
}