@inproceedings{shi17sensys, 
  author={Shi, Zhuoying and Zhang, Zhenyong and Shu, Yuanchao and Cheng, Peng and Chen, Jiming}, 
  booktitle={ACM Conference on Embedded Network Sensor Systems (SenSys)}, 
  title={{Demo: Indoor Navigation Leveraging Gradient WiFi Signals}}, 
  year={2017},
}