E. Oren, C. Guéret, and S. Schlobach. Proceedings of the 7th International Semantic Web Conference, volume 5318 of Lecture Notes in Computer Science, page 98--113. Berlin, Heidelberg, Springer, (October 2008)
C. Guéret, E. Oren, S. Schlobach, and M. Schut. Proceedings of the 2nd International Conference on Scalable Uncertainty Management, volume 5291 of Lecture Notes in Computer Science, page 215--228. Berlin, Heidelberg, Springer, (October 2008)