@inproceedings{ijcai1981p72,
  title     = {Using Active Connection Graphs for Reasoning with Recursive Rules},
  author    = {McKay, Donald P. and Shapiro, Stuart C.},
  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     = {368--373},
  year      = {1981},
  month     = {8},
  note      = {INFERENCE and REASONING},
  url       = {https://ijcai.org/proceedings/1981/72},
}