@inproceedings{ijcai1981p180,
  title     = {Last Steps Towards an Ultimate PROLOG},
  author    = {Colmerauer, Alain and Kanoui, Henry and Van Caneghem, Michel},
  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     = {947--947},
  year      = {1981},
  month     = {8},
  note      = {Programming Environments},
  url       = {https://ijcai.org/proceedings/1981/180},
}