@article{characterizationofcausalancestralgraphs,
  title = {Characterization of causal ancestral graphs for time series with latent confounders},
  author = {Andreas Gerhardus},
  year = {2021},
  eprint = {2112.08417},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2112.08417v2},
}