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StumbleUpon is the best way to discover great websites, videos, photos, blogs and more. Channel surf the internet and get personalized recommendations according to your interests. Keep an online history of your Stumbles, and rate, review and share all the cool things you find. See featured environment sites and meet people that like environment sites. Discover related sites in activism, ecology, nature, news, politics, science.
O. Boydell, and B. Smyth. IUI '07: Proceedings of the 12th international conference on Intelligent user interfaces, page 42--51. New York, NY, USA, ACM Press, (2007)
S. Braun, C. Schora, and V. Zacharias. 5th International Conference on Semantic Systems (I-SEMANTICS 2009), Proceedings of I-KNOW 09 and I-SEMANTICS 09, page 445-454. Graz, Austria, Verlag der Technischen Universitt Graz, (2009)
S. Braun, C. Schora, and V. Zacharias. 5th International Conference on Semantic Systems (I-SEMANTICS 2009), Proceedings of I-KNOW 09 and I-SEMANTICS 09, page 445-454. Graz, Austria, Verlag der Technischen Universitt Graz, (2009)
C. Cattuto, D. Benz, A. Hotho, and G. Stumme. International Semantic Web Conference, volume 5318 of Lecture Notes in Computer Science, page 615-631. Springer, (2008)
A. Ebersbach, M. Glaser, and R. Heigl. UTB UVK Verlagsgesellschaft, Konstanz, 2. überarb. edition, (2010)noch nicht erschienen, laut Verlag für Sept 2010 geplant.