1. Barbieri, D.F., Braga, D., Ceri, S., Valle, E.D., Grossniklaus, M.: C-SPARQL: a continuous query language for RDF data streams. IJSC 4, 3–25 (2010)
2. Case, P., Dyck, M., Holstege, M., Amer-Yahia, S., Botev, C., Buxton, S., Doerre, J., Melton, J., Rys, M., Shanmugasundaram, J.: XQuery and XPath Full Text. (2011). http://www.w3.org/TR/xpath-full-text-10/
3. Chan, C.Y., Felber, P., Garofalakis, M.N., Rastogi, R.: Efficient filtering of XML documents with XPath expressions. In: ICDE (2002)
4. Chang, C.C.K., Garcia-Molina, H., Paepcke, A.: Predicate rewriting for translating Boolean queries in a heterogeneous information system. ACM TOIS 17, 1–39 (1999)
5. Lecture Notes in Computer Science;P-A Chirita,2004