@inproceedings{ijcai1999p135,
  title     = {Computational Complexity of Planning and Approximate Planning in Presence of Incompleteness},
  author    = {Baral, Chitta and Kreinovich, Vladik and Trejo, Raul},
  booktitle = {Proceedings of the Sixteenth International Joint Conference on
               Artificial Intelligence, {IJCAI-99}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Thomas Dean},
  pages     = {948--954},
  year      = {1999},
  note      = {Planning and Scheduling},
  url       = {https://ijcai.org/proceedings/1999/135},
}