@article{deepcovariancedescriptorsforfacial,
  title = {Deep Covariance Descriptors for Facial Expression Recognition},
  author = {Naima Otberdout and Anis Kacem and Mohamed Daoudi and Lahoucine Ballihi and Stefano Berretti},
  year = {2018},
  eprint = {1805.03869},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1805.03869v1},
}