@inproceedings{ijcai1981p100,
  title     = {Universal Unification and Regular Equational ACFM Theories},
  author    = {Siekmann, Jörg H. and Szabó, Peter},
  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     = {532--537},
  year      = {1981},
  month     = {8},
  note      = {Theorem Proving},
  url       = {https://ijcai.org/proceedings/1981/100},
}