@inproceedings{ijcai2016p100,
  title     = {Improved Heuristic and Tie-Breaking for Optimally Solving Sokoban},
  author    = {Pereira, André Grahl and Holte, Robert C. and Schaeffer, Jonathan and Buriol, Luciana S. and Ritt, Marcus},
  booktitle = {Proceedings of the Twenty-Fifth International Joint Conference on
               Artificial Intelligence, {IJCAI-16}},
  publisher = {AAAI Press / International Joint Conferences on Artificial Intelligence},
  editor    = {Subbarao Kambhampati},
  pages     = {662--667},
  year      = {2016},
  month     = {7},
  url       = {https://ijcai.org/proceedings/2016/100},
}