@article{wang2018rf,
  title={RF-ECG: Heart Rate Variability Assessment Based on COTS RFID Tag Array},
  author={Wang, Chuyu and Xie, Lei and Wang, Wei and Chen, Yingying and Bu, Yanling and Lu, Sanglu},
  journal={Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies},
  volume={2},
  number={2},
  pages={85},
  year={2018},
  publisher={ACM}
}