R. Li, S. Bao, Y. Yu, B. Fei, and Z. Su. WWW '07: Proceedings of the 16th international conference on World Wide Web, page 943--952. New York, NY, USA, ACM, (2007)
W. Jones, A. Phuwanartnurak, R. Gill, and H. Bruce. CHI '05: CHI '05 extended abstracts on Human factors in computing systems, page 1505--1508. New York, NY, USA, ACM, (2005)
B. Barricelli, M. Padula, and P. Scala. HT '09: Proceedings of the Twentieth ACM Conference on Hypertext and Hypermedia, New York, NY, USA, ACM, (July 2009)
R. Yan, A. Natsev, and M. Campbell. MS '07: Workshop on multimedia information retrieval on The many faces of multimedia semantics, page 13--20. New York, NY, USA, ACM, (2007)
R. Li, S. Bao, Y. Yu, B. Fei, and Z. Su. WWW '07: Proceedings of the 16th international conference on World Wide Web, page 943--952. New York, NY, USA, ACM, (2007)
R. Cole, and P. Eklund. Proceedings of the 9th International Conference on Conceptual Structures (ICCS 2001), volume 2120 of Lecture Notes in Computer Science, page 319-332. Springer, (2001)