U. Assmann, S. Berger, F. Bry, T. Furche, J. Henriksson, and J. Johannes. On the Move to Meaningful Internet Systems 2007: OTM 2007 Workshops, Proceedings of International Workshop on Scalable Semantic Web Knowledge Base Systems, Vilamoura, Algarve, Portugal (25th--30th November 2007), volume 4805/2007 of LCNS, (2007)
E. Augurusa, D. Braga, A. Campi, and S. Ceri. SAC '03: Proceedings of the 2003 ACM symposium on Applied computing, page 1163--1167. New York, NY, USA, ACM, (2003)