A. Hotho, R. Jäschke, C. Schmitz, und G. Stumme. Proceedings of the Conceptual Structures Tool Interoperability Workshop at the 14th International Conference on Conceptual Structures, Aalborg, Denmark, Aalborg University Press, (Juli 2006)
X. Wu, L. Zhang, und Y. Yu. WWW '06: Proceedings of the 15th international conference on World Wide Web, Seite 417--426. New York, NY, USA, ACM Press, (2006)