@article{JAC_2014__39_3_a6,
     author = {Hobart, Sylvia A. and Williford, Jason},
     title = {Tightness in subset bounds for coherent configurations},
     journal = {Journal of Algebraic Combinatorics},
     pages = {647--658},
     publisher = {mathdoc},
     volume = {39},
     number = {3},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2014__39_3_a6/}
}