@inproceedings{Lukaszewicz85,
  title = {Two Results on Default Logic},
  author = {Witold Lukaszewicz},
  year = {1985},
  tags = {logic},
  researchr = {https://researchr.org/publication/Lukaszewicz85},
  cites = {0},
  citedby = {0},
  pages = {459-461},
  booktitle = {IJCAI},
}