@article{BMMS_1998_21_2_a3,
     author = {C.L. Deng and C.S. Gan},
     title = {On
                        {Digraphs} with {Non-derogatory} {Adjacency} {Matrix}},
     journal = {Bulletin of the Malaysian Mathematical Society},
     year = {1998},
     volume = {21},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/BMMS_1998_21_2_a3/}
}