@inproceedings{ijcai1983p96,
  title     = {W-JS: A Modal Logic of Knowledge},
  author    = {Ma, Xiwen and Guo, Weide},
  booktitle = {Proceedings of the Eighth International Joint Conference on
               Artificial Intelligence, {IJCAI-83}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Alan Bundy},
  pages     = {398--400},
  year      = {1983},
  note      = {Knowledge Representation},
  url       = {https://ijcai.org/proceedings/1983/96},
}