J. Pührer, S. Heymans, und T. Eiter. Proc. of 7th Extended Semantic Web Conference (ESWC 2010), Volume 6088 von Lecture Notes in Computer Science, Seite 183-197. Springer Berlin / Heidelberg, (2010)
S. Heymans, R. Korf, M. Erdmann, J. Pührer, und T. Eiter. Proc. of the 2010 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology, 1, Seite 248--255. (2010)
S. Heymans, C. Feier, und T. Eiter. Proceedings of the 3rd International Conference on Web Reasoning and Rule Systems (RR 2009), Volume 5837 von Lecture Notes in Computer Science, Seite 55-70. Chantilly, USA, Springer, (Oktober 2009)
S. Heymans, D. Nieuwenborgh, und 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.