@article{1349,
  author = {Ammar Alshamrani and Xuemin Shen and Liang-Liang Xie},
  title = {QoS provisioning for heterogeneous services in cooperative cognitive radio networks},
  year = {2011},
  journal = {IEEE Journal on selected Areas in Communications},
  volume = {29},
  number = {4},
  pages = {819-830},
  publisher = {IEEE},
}