@article{kissinger2019causalstructurejournal,
  title = "A categorical semantics for causal structure (extended version)",
  author = "Aleks Kissinger and Sander Uijlen",
  year = "2019",
  journal = "Logical Methods in Computer Science (LMCS)",
  number = "3",
  publisher = "Springer",
  volume = "15",
}