@inproceedings{ijcai1969p50,
  title     = {Using Relational Operators to Structure Long-Term Memory},
  author    = {Tharp, Alan L. and Krulee, Gilbert K.},
  booktitle = {Proceedings of the First International Joint Conference on
               Artificial Intelligence, {IJCAI-69}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Donald E. Walker and David C. Cooper},
  pages     = {579--586},
  year      = {1969},
  month     = {5},
  note      = {Linguistic Research Relevant to Artificial Intelligence},
  url       = {https://ijcai.org/proceedings/1969/50},
}