@article{WangWRCL12,
  author    = {Cong Wang and
               Qian Wang and
               Kui Ren and
               Ning Cao and
               Wenjing Lou},
  title     = {Toward Secure and Dependable Storage Services in Cloud Computing},
  journal={{IEEE} Transactions on Services Computing},
  volume    = {5},
  number    = {2},
  pages     = {220--232},
  year      = {2012}
}