R. Cooley, B. Mobasher, und J. Srivastava. Proceedings of the Ninth IEEE International Conference on Tools with Artificial Intelligence (ICTAI'97), IEEE Computer Society, (November 1997)
B. Bartsch-Spörl, M. Lenz, und A. Hübner. XPS-99: Knowledge-Based Systems - Survey and Future Directions,, Volume 1570 von Lecture Notes in Computer Science, Seite 67-89. Springer, (1999)
A. Majchrzak, C. Wagner, und D. Yates. WikiSym '06: Proceedings of the 2006 international symposium on Wikis, Seite 99--104. New York, NY, USA, ACM Press, (2006)
A. Hotho, R. Jäschke, C. Schmitz, und G. Stumme. The Semantic Web: Research and Applications, Volume 4011 von Lecture Notes in Computer Science, Seite 411--426. Berlin/Heidelberg, Springer, (Juni 2006)