J. Gemmell, A. Shepitsen, M. Mobasher, и R. Burke. Proceedings of the 6th Workshop on Intelligent Techniques for Web Personalization and Recommender Systems, (июля 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)