@InProceedings{ghmesc07a,
  author =	 "M. Gharib and R. Mercer and T. Schaub",
  title =	 "Incremental Answer Set Programming: A Preliminary Report",
  pages =	 "149-160",
  crossref =	 "asp07"
}
@Proceedings{asp07,
  title =	 "Proceedings of the Fourth International Workshop on Answer
                  Set Programming (ASP'07)",
  booktitle =	 "Proceedings of the Fourth International Workshop on Answer
                  Set Programming (ASP'07)",
  editor =	 "S. Costantini and R. Watson",
  OPTvolume =	 "",
  OPTpublisher = "",    
  year =	 2007
}