@inproceedings{ijcai1999p55,
  title     = {Diagrammatic Proofs},
  author    = {Foo, Norman Y. and Pagnucco, Maurice and Nayak, Abhaya C.},
  booktitle = {Proceedings of the Sixteenth International Joint Conference on
               Artificial Intelligence, {IJCAI-99}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Thomas Dean},
  pages     = {378--382},
  year      = {1999},
  note      = {Cognitive Modeling},
  url       = {https://ijcai.org/proceedings/1999/55},
}