@inproceedings{ijcai2009p87,
  title     = {Duplicate Avoidance in Depth-First Search with Applications to Treewidth},
  author    = {Dow, P. Alex and Korf, Richard E.},
  booktitle = {Proceedings of the Twenty-First International Joint Conference on
               Artificial Intelligence, {IJCAI-09}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Hiroaki Kitano},
  pages     = {480--484},
  year      = {2009},
  url       = {https://ijcai.org/proceedings/2009/87},
}