Spaniol, M., Klamma, R., & Lux, M. (2008). Imagesemantics: User-Generated Metadata, Content Based Retrieval & Beyond. Journal of Universal Computer Science, 14(10), 1792-1807. Retrieved from http://www.jucs.org/jucs_14_10/imagesemantics_user_generated_metadata/jucs_14_10_1792_1807_spaniol.pdf.