@article{JAC_2005__21_1_a3,
     author = {Bang, Sejeong and Hirasaka, Mitsugu and Song, Sung-Yell},
     title = {Semidirect products of association schemes},
     journal = {Journal of Algebraic Combinatorics},
     pages = {23--38},
     publisher = {mathdoc},
     volume = {21},
     number = {1},
     year = {2005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2005__21_1_a3/}
}