@inproceedings{ijcai1985p102,
  title     = {An Essential Hybrid Reasoning System: Knowledge and Symbol Level Accounts of KRYPTON},
  author    = {Brachman, Ronald J. and Gilbert, Victoria P. and Levesque, Hector J.},
  booktitle = {Proceedings of the Ninth International Joint Conference on
               Artificial Intelligence, {IJCAI-85}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Aravind Joshi},
  pages     = {532--538},
  year      = {1985},
  note      = {Knowledge Representation},
  url       = {https://ijcai.org/proceedings/1985/102},
}