@article{coherenceconstraintsinfacialexpression,
  title = {Coherence Constraints in Facial Expression Recognition},
  author = {Graziani Lisa and Melacci Stefano and Gori Marco},
  year = {2018},
  eprint = {1810.10326},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1810.10326v1},
}