@article{artificialnoiseaidedsecurecognitive,
  title = {Artificial Noise Aided Secure Cognitive Beamforming for Cooperative MISO-NOMA Using SWIPT},
  year = {2018},
  eprint = {1802.09609},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1802.09609v1},
}