@inproceedings{DBLP:conf/ijcai/DelgrandeS97,
  author = {Delgrande, James P. and Schaub, Torsten},
  title = {Compiling Reasoning with and about Preferences into Default Logic},
  booktitle = {{IJCAI} {(1)}},
  pages = {168--175},
  publisher = {Morgan Kaufmann},
  year = {1997}
}