user- Foundations of Intelligent Systems, 16th International Symposium,, volume 4203 of Lecture Notes in Computer Science, page 322-331. Springer, Berlin--Heidelberg, Germany, (2006)
- Universität Karlsruhe TH, Karlsruhe, Germany, (January 2006)
- page 99--110. Springer, Berlin--Heidelberg, Germany, (2004)
- Inductive Concept Retrieval and Query Answering with Semantic Knowledge Bases Through Kernel MethodsProceedings of the 11th International Conference on Knowledge-Based Intelligent Information and Engineering Systems KES 2007, XVII Italian Workshop on Neural Networks,, 4692, page 148--155. Springer, Berlin--Heidelberg, Germany, (2007)
- Proceedings of the 2006 ACM Symposium on Applied Computing SAC 2006, April 23-27, 2006, Dijon, France, page 1695--1699. ACM, New York, NY, USA, (2006)
- Proceedings of the 4th International Conference on Principles of Knowledge Representation and Reasoning KR'94, May 24-27, 1994, Bonn, Germany, page 121--133. Morgan-Kauffman Publishers, San Francisco, CA, USA, (1994)
- Proceedings of the 2005 International Workshop on Description Logics DL2005, July 26-28, 2005, Edinburgh, Scotland, UK, volume 147 of CEUR Workshop Proceedings, CEUR-WS.org, (2005)
- Cambridge University Press, Cambridge, UK, (2003)
- Proceedings of Convegno Italiano di Logica Computazionale CILC05 21-22 June 2005, Rome, Italy, (2005)
- University of Bari, Italy, (2007)
- Proceedings of the 17th International Conference on Inductive Logic Programming ILP, (2007)
- Proceedings of the 17th International Conference on Inductive Logic Programming ILP, (2007)
- Journal of Web Semantics (2003)
- Machine Learning 17(2-3):169-199 (1994)
- Machine Learning 25(2-3):151-193 (1996)
