@inproceedings{ijcai1973p22,
  title     = {Discovering Classification Rules Using variable-Valued Logic System VL1},
  author    = {Michalski, Ryszard S.},
  booktitle = {Proceedings of the Third International Joint Conference on
               Artificial Intelligence, {IJCAI-73}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Nils J. Nilsson},
  pages     = {162--171},
  year      = {1973},
  month     = {8},
  note      = {Theorem Proving and Logic: 2},
  url       = {https://ijcai.org/proceedings/1973/22},
}