J. Tang, M. Hong, J. Li, и B. Liang. International Semantic Web Conference, том 4273 из Lecture Notes in Computer Science, стр. 640-653. Springer, (2006)
L. von Ahn, и L. Dabbish. CHI '04: Proceedings of the SIGCHI conference on Human factors in computing systems, стр. 319--326. New York, NY, USA, ACM, (2004)
P. Chirita, S. Costache, W. Nejdl, и S. Handschuh. WWW '07: Proceedings of the 16th International Conference on World Wide Web, стр. 845--854. New York, NY, USA, ACM, (2007)
R. Yan, A. Natsev, и M. Campbell. MS '07: Workshop on multimedia information retrieval on The many faces of multimedia semantics, стр. 13--20. New York, NY, USA, ACM, (2007)
R. Jesus, D. Goncalves, A. Abrantes, и N. Correia. Computer Vision and Pattern Recognition Workshops, 2008. CVPR Workshops 2008. IEEE Computer Society Conference on(Июнь 2008)