@inproceedings{ijcai2019p867,
  title     = {Optimally Efficient Bidirectional Search},
  author    = {Shaham, Eshed and Felner, Ariel and Sturtevant, Nathan R. and Rosenschein, Jeffrey S.},
  booktitle = {Proceedings of the Twenty-Eighth International Joint Conference on
               Artificial Intelligence, {IJCAI-19}},
  publisher = {International Joint Conferences on Artificial Intelligence Organization},
  pages     = {6221--6225},
  year      = {2019},
  month     = {7},
  doi       = {10.24963/ijcai.2019/867},
  url       = {https://doi.org/10.24963/ijcai.2019/867},
}