@inproceedings{ijcai1985p71,
  title     = {Neat Explanation of Proof Trees},
  author    = {Eriksson, Agneta and Johansson, Anna-Lena},
  booktitle = {Proceedings of the Ninth International Joint Conference on
               Artificial Intelligence, {IJCAI-85}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Aravind Joshi},
  pages     = {379--380},
  year      = {1985},
  note      = {Expert Systems},
  url       = {https://ijcai.org/proceedings/1985/71},
}