@inproceedings{ijcai2007p387,
  title     = {Lambda Depth-First Proof Number Search and Its Application to Go},
  author    = {Yoshizoe, Kazuki and Kishimoto, Akihiro and Müller, Martin},
  booktitle = {Proceedings of the Twentieth International Joint Conference on
               Artificial Intelligence, {IJCAI-07}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Ramon López de Mántaras},
  pages     = {2404--2408},
  year      = {2007},
  url       = {https://ijcai.org/proceedings/2007/387},
}