1. McDonald, M.: Internet reshapes how dealers sell used cars (2012). http://wardsauto.com/dealerships/internet-reshapes-how-dealers-sell-used-cars . Accessed 05 Feb 2014
2. Grimes, S.: Breakthrough analysis: two + nine types of semantic search (2010). http://www.informationweek.com/software/informationmanagement/breakthrough-analysis-two-+-nine-types-ofsemantic-search/d/d-id/1086310 . Accessed 09 Feb 2017
3. Zhuhadar, L., Nasraoui, O.: A hybrid recommender system guided by semantic user profiles for search in the e-learning domain. J. Emerg. Technol. Web Intell. 2(4), 272–281 (2010)
4. Lecture Notes in Computer Science;R Burke,2007
5. Manchale, P., Bilal, M.: Curated content based recommender system. Int. J. Comput. Sci. Eng. 2(4), 66–72 (2013)