I. Cantador, and P. Castells. Proceedings of the 2nd Workshop on Semantic Network Analysis, 3dr European Semantic Web Conference (ESWC 2006), page 40-53. (Jun 12, 2006)
J. Jung, and J. Euzenat. Proceedings of the European Semantic Web Conference (ESWC2007), volume 4519 of LNCS, page 267-280. Berlin Heidelberg, Germany, Springer-Verlag, (July 2007)