A. Zimmermann, M. Krötzsch, J. Euzenat, и P. Hitzler. Proceedings of the Fourth International Conference on Formal Ontology in Information Systems (FOIS 2006), том 150 из Frontiers in Artificial Intelligence and Applications, стр. 277--288. IOS Press, (ноября 2006)
P. Ziegler, C. Kiefer, C. Sturm, K. Dittrich, и A. Bernstein. 10th International Conference on Extending Database Technology (EDBT 2006), том 3896 из Lecture Notes in Computer Science, стр. 59-76. Munich, Germany, March 26-31, Springer, (2006)
P. Ziegler, C. Kiefer, C. Sturm, K. Dittrich, и A. Bernstein. 10th International Conference on Extending Database Technology (EDBT 2006), том 3896 из Lecture Notes in Computer Science, стр. 59-76. Munich, Germany, March 26-31, Springer, (2006)
C. Ziegler, G. Lausen, и S. Lars. Proceedings of the thirteenth ACM international conference on Information and knowledge management, стр. 406--415. New York, NY, USA, ACM, (2004)
C. Ziegler, L. Schmidt-Thieme, и G. Lausen. Proc. of the 2nd ACM SIGIR Semantic Web and Information Retrieval Workshop (SWIR '04), Sheffield, UK, (2004)