@article{automaticestimationofselfreportedpainby1,
  title = {Automatic Estimation of Self-Reported Pain by Trajectory Analysis in the Manifold of Fixed Rank Positive Semi-Definite Matrices},
  author = {Benjamin Szczapa and Mohamed Daoudi and Stefano Berretti and Pietro Pala and Alberto del Bimbo and Zakia Hammal},
  year = {2022},
  eprint = {2209.01813},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2209.01813v2},
}