U. Priss, und L. Old. Proceedings of the 15th International Conference on Conceptual Structures (ICCS 2007), Volume 4604 von Lecture Notes in Artificial Intelligence, Seite 310-320. Berlin, Heidelberg, Springer-Verlag, (Juli 2007)
P. Cimiano, A. Hotho, und S. Staab. Proceedings of the Conference on Languages Resources and Evaluation (LREC), Lisbon, Portugal, ELRA - European Language Ressources Association, (Mai 2004)
P. Bosc, L. Lietard, und O. Pivert. PKDD '98: Proceedings of the Second European Symposium on Principles of Data Mining and Knowledge Discovery, Seite 255--263. London, UK, Springer-Verlag, (1998)
S. Staab, und A. Hotho. Intelligent Information Processing and Web Mining, Proceedings of the International IIS: IIPWM'03 Conference held in Zakopane, Seite 451-452. (2003)
J. Allan, und H. Raghavan. Proceedings of the 25th annual international ACM SIGIR Conference on Research and Development in Information Retrieval, Seite 307--314. ACM Press New York, NY, USA, (2002)