R. Jäschke, A. Hotho, C. Schmitz, and G. Stumme. Proc. 18. Workshop Grundlagen von Datenbanken, page 80-84. Halle-Wittenberg, Martin-Luther-Universität, (June 2006)
A. Hotho, R. Jäschke, C. Schmitz, and G. Stumme. Prof. First International Conference on Semantics And Digital Media Technology (SAMT) (to appear), Athens, Greece, (December 2006)