J. Illig, A. Hotho, R. Jäschke, und G. Stumme. Postproceedings of the International Conference on Knowledge Processing in Practice (KPP 2007), Springer, (2011)
R. Jäschke, L. Marinho, A. Hotho, L. Schmidt-Thieme, und G. Stumme. Knowledge Discovery in Databases: PKDD 2007, 11th European Conference on Principles and Practice of Knowledge Discovery in Databases, Volume 4702 von Lecture Notes in Computer Science, Seite 506-514. Berlin, Heidelberg, Springer, (2007)