@inproceedings{ijcai1995p206,
  title     = {Planning with Abstraction Hierarchies can be Exponentially Less Efficient},
  author    = {Bäckström, Christer and Jonsson, Peter},
  booktitle = {Proceedings of the Fourteenth International Joint Conference on
               Artificial Intelligence, {IJCAI-95}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Chris S. Mellish},
  pages     = {1599--1604},
  year      = {1995},
  note      = {Planning},
  url       = {https://ijcai.org/proceedings/1995/206},
}