@article{CMJ_1997__47_3_a4,
     author = {Chao, Chong-Yun and Han, Shao-cen},
     title = {On the classification and toughness of generalized permutation star-graphs},
     journal = {Czechoslovak Mathematical Journal},
     pages = {431--452},
     publisher = {mathdoc},
     volume = {47},
     number = {3},
     year = {1997},
     mrnumber = {1461423},
     zbl = {0898.05033},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_1997__47_3_a4/}
}