1. Mirco Speretta, Aravind Chandramouli, Alessandro Micarelli, User profiles for personalized information access, The adaptive web: methods and strategies of web personalization, Springer-Verlag, Berlin;Susan Gauch;Heidelberg,2007
2. Sanchis “Creating evolving user behavior profiles automatically”;Iglesias;IEEE Trans. Knowl. Data Eng.,2011
3. RICH, E.A. (1979a). Building and exploiting user models. “Ph.D. thesis, Carnegie-Mellon University.
4. GAUCH J.CHAFEE “Ontology based personalized search and browsing”, Web Intelligence and Agent Systems, vol1 no. 3-4, 200. presented at IFIP 17th World Computer Congress, Montreal, Canada, Aug (2002)..
5. context in web search”;Lawrence;IEEE Data Engineering Bulletin,2000