Knowledge Processing and Information Systems
A semantic framework for preference handling in answer set programming

@article{DBLP:journals/tplp/SchaubW03,
  title = {A semantic framework for preference handling in answer set programming},
  author = {Schaub, Torsten and Wang, Kewen},
  journal = {{TPLP}},
  number = {4-5},
  pages = {569--607},
  volume = {3},
  year = {2003}
}