S. Heymans, and I. Toma. Proceedings of the 2nd International Conference on Web Reasoning and Rule Systems (RR 2008), volume 5341 of Lecture Notes in Computer Science, page 181-196. Karlsruhe, Germany, Springer, (2008)
J. Janssen, S. Heymans, D. Vermeir, and M. Cock. Proceedings of the 24th International Conference on Logic Programming (ICLP 2008), volume 5366 of Lecture Notes in Computer Science, page 362-376. Udine, Italy, Springer, (2008)
C. Feier, and S. Heymans. Proceedings of the 3rd International Workshop on Applications of Logic Programming on the (Semantic) Web and Web Services (ALPSWS 2008), volume 434 of CEUR Workshop Proceedings, Udine, Italy, CEUR-WS.org, (2008)
S. Heymans, D. Nieuwenborgh, and D. Vermeir. Transactions on Computational Logic, 9 (4):
1-53(August 2008)ACM, 2008. This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution. The definitive version was published in Transactions on Computational Logic, VOL 9, ISS 4, (August 2008) http://doi.acm.org/10.1145/1380572.1380575.