@article{compositionalabstractionerroranda,
  title = {Compositional Abstraction Error and a Category of Causal Models},
  author = {Eigil F. Rischel and Sebastian Weichwald},
  year = {2021},
  eprint = {2103.15758},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2103.15758v2},
}