ZhangH12'

@article{DBLP:journals/ijcm/ZhangH12,
  author    = {Ling Zhang and
               Ting-Zhu Huang},
  title     = {Bounds on the generalized -scrambling indices of primitive
               digraphs},
  journal   = {Int. J. Comput. Math.},
  volume    = {89},
  number    = {1},
  year      = {2012},
  pages     = {17-29},
  ee        = {http://dx.doi.org/10.1080/00207160.2011.638059},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}