1. Stamou, G., Avrithis, Y., Kollias, S., Marques, F., Salembier, P.: Semantic Unification of Heterogenous Multimedia Archives. In: Proc. of 4th European Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS 2003), London, UK, April 9-11 (2003)
2. Hunter, J.: Adding Multimedia to the Semantic Web: Building an MPEG-7 Ontology. In: Proc. of First Semantic Web Working Symposium, SWWS 2001, July 2001, Stanford University, California (2001)
3. Sikora, T.: The MPEG-7 Visual standard for content description - an overview. IEEE Trans. on Circuits and Systems for Video Technology, special issue on MPEG-7 11(6), 696–702 (2001)
4. ISO/IEC JTC1/SC29/WG11 N5231, MPEG-21 Overview, Shanghai (October 2002)
5. Akrivas, G., Stamou, G.: Fuzzy semantic association of audiovisual document descriptions. In: Proc. of Int. Workshop on Very Low Bitrate Video Coding (VLBV 2001), Athens, Greece (October 2001)