@article{JAC_2008__27_3_a4,
     author = {Hanaki, Akihide and Hirasaka, Mitsugu and Uno, Katsuhiro},
     title = {Commutativity of association schemes of prime square order having non-trivial thin closed subsets},
     journal = {Journal of Algebraic Combinatorics},
     pages = {307--316},
     publisher = {mathdoc},
     volume = {27},
     number = {3},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2008__27_3_a4/}
}