@inproceedings{ijcai2019p848,
  title     = {A Refined Understanding of Cost-optimal Planning with Polytree Causal Graphs},
  author    = {Bäckström, Christer and Jonsson, Peter and Ordyniak, Sebastian},
  booktitle = {Proceedings of the Twenty-Eighth International Joint Conference on
               Artificial Intelligence, {IJCAI-19}},
  publisher = {International Joint Conferences on Artificial Intelligence Organization},
  pages     = {6126--6130},
  year      = {2019},
  month     = {7},
  doi       = {10.24963/ijcai.2019/848},
  url       = {https://doi.org/10.24963/ijcai.2019/848},
}