@article{JMLR:v24:22-0916,
  author  = {Tobias Fritz and Andreas Klingler},
  title   = {The d-Separation Criterion in Categorical Probability},
  journal = {Journal of Machine Learning Research},
  year    = {2023},
  volume  = {24},
  number  = {46},
  pages   = {1--49},
  url     = {http://jmlr.org/papers/v24/22-0916.html}
}