L. Wu, X. Hua, N. Yu, W. Ma, и S. Li. MM '08: Proceeding of the 16th ACM international conference on Multimedia, стр. 31--40. New York, NY, USA, ACM, (2008)
H. Kim, S. Scerri, J. Breslin, S. Decker, и H. Kim. Proceedings of the 2008 International Conference on Dublin Core and Metadata Applications, стр. 128--137. Berlin, Deutschland, Dublin Core Metadata Initiative, (2008)