M. Atzmueller, J. Baumeister, and F. Puppe. INAP/WLP'04: Applications of Declarative Programming and Knowledge Management (selected papers), LNAI 3392, page 65-78. (2005)
M. Atzmueller, and F. Puppe. Proc. 10th European Conference on Principles and Practice of Knowledge Discovery in Databases (PKDD 2006), 4213, page 6-17. (2006)