@inproceedings{DBLP:conf/fapr/SchaubT96,
  author = {Schaub, Torsten and Thielscher, Michael},
  title = {Skeptical Query-Answering in Constrained Default Logic},
  booktitle = {{FAPR}},
  series = {Lecture Notes in Computer Science},
  volume = {1085},
  pages = {567--581},
  publisher = {Springer},
  year = {1996}
}