A. Hotho, R. Jäschke, C. Schmitz, and G. Stumme. Proceedings of the First International Conference on Semantics And Digital Media Technology (SAMT), (2006)
A. Hotho, R. Jäschke, C. Schmitz, and G. Stumme. Proceedings of the 3rd European Semantic Web Conference, volume 4011 of LNCS, page 411-426. Budva, Montenegro, Springer, (June 2006)