1. RDF (2009). http://www.w3.org/RDF/ . Accessed August 2009.
2. OWL (2009). http://www.w3.org/TR/owl-features/ . Accessed August 2009.
3. Wouters, C. (2005). A formalization and application of ontology extraction. PhD thesis, La Trobe University, Melbourne, Australia.
4. Lecture notes in computer science;M. Bhatt,2004
5. Flahive, A. (2008). Tailoring large domain ontologies in the semantic grid environment. PhD Thesis, La Trobe University, Australia.