@inproceedings{Straccia06e,
 Author = {Straccia, Umberto},
 Booktitle = {Proceedings of the 10th International Conference on Principles of Knowledge
Representation (KR-06)},
 Pages = {329-339},
 Publisher = {AAAI Press},
 Title = {Query Answering under the Any-World Assumption for Normal Logic Programs},
 Year = {2006}}