@article{DBLP:journals/tdsc/JhaLTWW08,
  author    = {Somesh Jha and
               Ninghui Li and
               Mahesh V. Tripunitara and
               Qihua Wang and
               William H. Winsborough},
  title     = {Towards Formal Verification of Role-Based Access Control
               Policies},
  journal   = {IEEE Trans. Dependable Sec. Comput.},
  volume    = {5},
  number    = {4},
  year      = {2008},
  pages     = {242-255},
  ee        = {http://dx.doi.org/10.1109/TDSC.2007.70225},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}