@inproceedings{WanGKFL-ICLP09,
  author    = {Hui Wan and
               Benjamin N. Grosof and
               Michael Kifer and
               Paul Fodor and
               Senlin Liang},
  title     = {Logic Programming with Defaults and Argumentation Theories},
  booktitle = {Proceedings of 25th International Conference on Logic Programming (ICLP)},
  year      = {2009},
  pages     = {432-448}
}