P. Bonatti, and L. Sauro. Proceedings of the 3rd International Workshop on Applications of Logic Programming to the (Semantic) Web and Web Services (ALPSWS2008), Udine, Italy, volume 434 of CEUR Workshop Proceedings, Sun SITE Central Europe, (2009)
S. Sohrabi. The Semantic Web -- ISWC 2010: 9th International Semantic Web Conference, Shanghai, China, Revised Selected Papers, Part II, volume 6497 of Lecture Notes in Computer Science, Springer, Berlin, (2010)