@inproceedings{ijcai1983p88,
  title     = {Reasoning in Multiple Belief Spaces},
  author    = {Martins, João P. and Shapiro, Stuart C.},
  booktitle = {Proceedings of the Eighth International Joint Conference on
               Artificial Intelligence, {IJCAI-83}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Alan Bundy},
  pages     = {370--372},
  year      = {1983},
  note      = {Knowledge Representation},
  url       = {https://ijcai.org/proceedings/1983/88},
}