P. Haase, D. Herzig, M. Musen, and T. Tran. The Semantic Web: Research and Applications, 6th European Semantic Web Conference, ESWC 2009, Heraklion, Crete, Greece, volume 5554 of Lecture Notes in Computer Science, Springer, Berlin, (2009)
M. Möller, S. Regel, and M. Sintek. The Semantic Web: Research and Applications, 6th European Semantic Web Conference, ESWC 2009, Heraklion, Crete, Greece, volume 5554 of Lecture Notes in Computer Science, Springer, Berlin, (2009)
N. Spivack. The Semantic Web -- ISWC 2009: 8th International Semantic Web Conference, Chantilly, VA, USA, volume 5823 of Lecture Notes in Computer Science, Springer, Berlin, (2009)
G. Schmidt, and I. Novakovic. Proceedings of the Poster and Demonstration Session at the 7th International Semantic Web Conference (ISWC 2008), Karlsruhe, Germany, (2008)
D. Gomes, M. Costa, D. Cruz, J. Miranda, and S. Fontes. Proceedings of the 22Nd International Conference on World Wide Web, page 1059--1066. New York, NY, USA, ACM, (2013)