A. Hotho, R. Jäschke, C. Schmitz, und G. Stumme. Proceedings of the First Conceptual Structures Tool Interoperability Workshop at the 14th International Conference on Conceptual Structures, Seite 87-102. Aalborg, Aalborg Universitetsforlag, (2006)
S. Niwa, T. Doi, und S. Honiden. ITNG '06: Proceedings of the Third International Conference on Information Technology: New Generations (ITNG'06), Seite 388--393. Washington, DC, USA, IEEE Computer Society, (2006)