@inproceedings{ware2023causal,
  title={Causal Necessity as a Narrative Planning Step Cost Function},
  author={Ware, Stephen G. and Senanayake, Lasantha and Farrell, Rachelyn},
  booktitle={Proceedings of the 19th AAAI international conference on Artificial Intelligence and Interactive Digital Entertainment},
  year={2023},
  pages={155--164}
}