@article{uppermiddleandlowerregionlearningfor,
  title = {Upper, Middle and Lower Region Learning for Facial Action Unit Detection},
  author = {Yao Xia},
  year = {2020},
  eprint = {2002.04023},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2002.04023v2},
}