1. Exploring the value of folksonomies for creating semantic metadata;Al-Khalifa;International Journal on Semantic Web & Information Systems,2007
2. P. Buitelaar, P. Cimiano, B. Magnini, Ontology learning from text: An overview, Ontology learning from text: Methods, evaluation and applications (2005) 3–12.
3. E. Rosch, C.B. Mervis, W.D. Gray, D.M. Johnson, P. Boyes-Braem, Basic objects in natural categories, Cognitive Psychology (3) 382–439.
4. The big book of concepts;Murphy,2004
5. Semantic grounding of tag relatedness in social bookmarking systems;Cattuto,2008