@article{belli2019toward,
  title={Toward fog-based mobile crowdsensing systems: State of the art and opportunities},
  author={Belli, Dimitri and Chessa, Stefano and Kantarci, Burak and Foschini, Luca},
  journal={IEEE Communications Magazine},
  volume={57},
  number={12},
  pages={78--83},
  year={2019},
  publisher={IEEE}
}