@article{uavoffloadingspectrumtradingcontract,
  title = {UAV Offloading: Spectrum Trading Contract Design for UAV Assisted 5G Networks},
  year = {2018},
  eprint = {1801.05388},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1801.05388v2},
}