@inproceedings{ijcai1981p129,
  title     = {A Parallel Computation that Assigns Canonical Object-Based Frames of Reference},
  author    = {Hinton, Geoffrey E.},
  booktitle = {Proceedings of the Seventh International Joint Conference on
               Artificial Intelligence, {IJCAI-81}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Roger C. Schank},
  pages     = {683--684},
  year      = {1981},
  month     = {8},
  note      = {Vision: 3-d},
  url       = {https://ijcai.org/proceedings/1981/129},
}