@inproceedings{DBLP:conf/lpnmr/GebserKS09,
  author = {Gebser, Martin and Kaufmann, Benjamin and Schaub, Torsten},
  title = {The Conflict-Driven Answer Set Solver clasp: Progress Report},
  booktitle = {{LPNMR}},
  series = {Lecture Notes in Computer Science},
  volume = {5753},
  pages = {509--514},
  publisher = {Springer},
  year = {2009}
}