@article{ji2015crowdsensing,
  title={CrowdSensing: a Crowd-Sourcing based Indoor Navigation using RFID-based Delay Tolerant Network.},
  author={Hao Ji and Lei Xie and Chuyu Wang and Yafeng Yin and Sanglu Lu},
  journal={Journal of Network and Computer Applications},
  volume={52},
  pages={79-89},
  year={2015},
  publisher={Elsevier}
}