Y. Yanbe, A. Jatowt, S. Nakamura, and K. Tanaka. JCDL '07: Proceedings of the 7th ACM/IEEE-CS Joint Conference on Digital Libraries, page 107--116. New York, NY, USA, ACM, (2007)
R. Jäschke, A. Hotho, C. Schmitz, and G. Stumme. Proceedings of the 15th International Conference on Conceptual Structures (ICCS 2007), volume 4604 of Lecture Notes in Artificial Intelligence, page 283--295. Berlin/Heidelberg, Springer-Verlag, (July 2007)
M. Pera, and Y. Ng. Proceedings of the 20th ACM international conference on Information and knowledge management, page 2133--2136. New York, NY, USA, ACM, (2011)
P. Seitlinger, D. Kowald, C. Trattner, and T. Ley. Proceedings of the 22nd ACM international conference on Conference on information &\#38; knowledge management, page 2381--2386. New York, NY, USA, ACM, (2013)
A. Hotho, R. Jäschke, C. Schmitz, and G. Stumme. Proceedings of the Conceptual Structures Tool Interoperability Workshop at the 14th International Conference on Conceptual Structures, Aalborg, Denmark, Aalborg University Press, (July 2006)
R. Jäschke, B. Krause, A. Hotho, and G. Stumme. Proceedings of the Second International Conference on Weblogs and Social Media (ICWSM 2008), page 192--193. Menlo Park, CA, USA, AAAI Press, (2008)