@article{aqpdcitydatasetpicturebasedpm25,
  title = {AQPDCITY Dataset: Picture-Based PM Monitoring in the Urban Area of Big Cities},
  author = {Yonghui Zhang and Ke Gu},
  year = {2020},
  eprint = {2003.09784},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2003.09784v2},
}