@inproceedings{ijcai1989p184,
  title     = {Vivid Knowledge and Tractable Reasoning},
  author    = {Etherington, David W. and Borgida, Alexander and Brachman, Ronald J. and Kautz, Henry A.},
  booktitle = {Proceedings of the Eleventh International Joint Conference on
               Artificial Intelligence, {IJCAI-89}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {N. S. Sridharan},
  pages     = {1146--1151},
  year      = {1989},
  month     = {8},
  note      = {Commonsense Reasoning},
  url       = {https://ijcai.org/proceedings/1989/184},
}