@article{fittingcomparisonandalignmentof,
  title = {Fitting, Comparison, and Alignment of Trajectories on Positive Semi-Definite Matrices with Application to Action Recognition},
  author = {Benjamin Szczapa and Mohamed Daoudi and Stefano Berretti and Alberto Del Bimbo and Pietro Pala and Estelle Massart},
  year = {2019},
  eprint = {1908.00646},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1908.00646v3},
}