@article{zhou-2013-sgor,
  author    = {Peng Zhou and Xiapu Luo and Ang Chen and Rocky K.C. Chang},
  title     = {{SGor}: Trust graph based onion routing},
  journal   = {Computer Networks},
  volume    = {57},
  issue     = {17},
  year      = {2013},
  pages     = {3522-3544},
  ee        = {http://dx.doi.org/10.1016/j.comnet.2013.08.005}
}