@inproceedings{ijcai2001p19,
  title     = {A Circumscriptive Formalization of the Qualification Problem},
  author    = {Kartha, G. Neelakantan},
  booktitle = {Proceedings of the Seventeenth International Joint Conference on
               Artificial Intelligence, {IJCAI-01}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  pages     = {139--143},
  year      = {2001},
  url       = {https://ijcai.org/proceedings/2001/19},
}