@article{1223,
  author = {Mohamed Mahmoud and Xuemin Shen},
  title = {FESCIM: fair, efficient, and secure cooperation incentive mechanism for multihop cellular networks},
  year = {2012},
  journal = {IEEE Transactions on Mobile Computing},
  volume = {11},
  number = {5},
  pages = {753-766},
  publisher = {IEEE},
}