1. W3C. (2011). HTML+RDFa 1.1. W3C Working Draft. Retrieved from http://www.w3.org/TR/2011/WD-rdfa-in-html-20110525/
2. Baader, F., Calvanese, D., McGuinness, D., Nardi, D., & Patel-Schneider, P. F. (Eds.). (2003). The description logic handbook: Theory, implementation, and applications. Cambridge, UK: Cambridge University Press.
3. Basic description logics;F.Baader;Description Logic Handbook: Theory, Implementation, and Applications,2003
4. Birbeck, M. (2004). XHTML and RDF. Retrieved from http://www.w3.org/MarkUp/2004/02/xhtml-rdf
5. Exploring the symbolic/subsymbolic continuum: A case study of RAAM;D. S.Blank;The Symbolic and Connectionist Paradigms: Closing the Gap,1992