@article{1120,
  author = {Hangguan Shan and Zhifeng Ni and Weihua Zhuang and Aiping Huang and Wei Wang},
  title = {Virtual spectrum hole: Exploiting user behavior-aware time-frequency resource conversion},
  year = {2014},
  journal = {IEEE Transactions on Wireless Communications},
  volume = {13},
  number = {12},
  pages = {6809-6823},
  publisher = {IEEE},
}