@inproceedings{DBLP:conf/ecsqaru/BenhammadiNS99,
  author = {Benhammadi, Farid and Nicolas, Pascal and Schaub, Torsten},
  title = {Query-Answering in Prioritized Default Logic},
  booktitle = {{ESCQARU}},
  series = {Lecture Notes in Computer Science},
  volume = {1638},
  pages = {32--42},
  publisher = {Springer},
  year = {1999}
}