@inproceedings{ijcai1999p25,
  title     = {Expressive Reasoning about Action in Nondeterministic Polynomial Time},
  author    = {Drakengren, Thomas and Bjäreland, Marcus},
  booktitle = {Proceedings of the Sixteenth International Joint Conference on
               Artificial Intelligence, {IJCAI-99}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Thomas Dean},
  pages     = {166--170},
  year      = {1999},
  note      = {Automated Reasoning},
  url       = {https://ijcai.org/proceedings/1999/25},
}