C. Guéret, E. Oren, S. Schlobach, and M. Schut. SUM '08: Proceedings of the 2nd international conference on Scalable Uncertainty Management, page 215--228. Berlin, Heidelberg, Springer-Verlag, (2008)
M. Richardson, and P. Domingos. K-CAP '03: Proceedings of the 2nd international conference on Knowledge capture, page 129--137. New York, NY, USA, ACM Press, (2003)