@inproceedings{ijcai1987p32,
  title     = {A Shell for Intelligent Help Systems},
  author    = {Breuker, Joost and Winkels, Radboud and Sandberg, Jacobijn},
  booktitle = {Proceedings of the Tenth International Joint Conference on
               Artificial Intelligence, {IJCAI-87}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {John McDermott},
  pages     = {167--172},
  year      = {1987},
  note      = {Cognitive Modeling},
  url       = {https://ijcai.org/proceedings/1987/32},
}