@article{DMGT_2012_32_2_a4,
     author = {Su, Li and Li, Hong-Hai and Zheng, Liu-Rong},
     title = {The {Laplacian} spectrum of some digraphs obtained from the wheel},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {255--261},
     publisher = {mathdoc},
     volume = {32},
     number = {2},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2012_32_2_a4/}
}