1. Lecture Notes in Computer Science;B. Aleman-Meza,2005
2. Alkhateeb, F., Baget, J.-F., Euzenat, J.: Complex path queries for RDF. Poster paper in 4th International Semantic Web Converence (ISWC2005), Galway, Ireland (2005)
3. Anyanwu, K., Sheth, A.: r-Queries: Enabling Querying for Semantic Associations on the Semantic Web. In: 12th International World Wide Web Conf., Budapest, Hungary (2003)
4. Beeri, C., Kanellakis, P., Bancilhon, F., Ramakrishnan, R.: Bounds on the propagation of selection into logic programs. In: 6th ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems, San Diego, California, United States, pp. 214–226 (1987)
5. Broekstra, J., Kampman, A.: SeRQL: A Second Generation RDF Query Language. In: SWAD-Europe Workshop on Semantic Web Storage and Retrieval, Amsterdam, Netherlands (2003)