@inproceedings{ijcai1993p35,
  title     = {Complete Solution of the Eight-Puzzle and the Benefit of Node Ordering in IDA},
  author    = {Reinefeld, Alexander},
  booktitle = {Proceedings of the Thirteenth International Joint Conference on
               Artificial Intelligence, {IJCAI-93}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Ruzena Bajcsy},
  pages     = {248--252},
  year      = {1993},
  note      = {Constraint Satisfaction Problems},
  url       = {https://ijcai.org/proceedings/1993/35},
}