@inproceedings{qu2016cas,
  title={CAS (ME) 2: A Database of Spontaneous Macro-expressions and Micro-expressions},
  author={Qu, Fangbing and Wang, Su-Jing and Yan, Wen-Jing and Fu, Xiaolan},
  booktitle={International Conference on Human-Computer Interaction},
  pages={48--59},
  year={2016},
  organization={Springer}
}