1. Bormans, J., Hill, K.: N5231—MPEG-21 Overview v.5. http://www.chiariglione.org/mpeg/standards/mpeg-21/mpeg-21.htm (2002)
2. DeMartini, T., Wang, X., Wragg, B.: N5599—Study of Text of ISO/IEC FCD 21000-5 Rights Expression Language. http://xml.coverpages.org/MPEG21-W5599-StudyOfREL-FCD-200303.pdf (2003)
3. Fahmi H., Latif M., Sedigh-Ali S., Ghafoor A., Liu P. and Hsu L.H (2001). Proxy servers for scalable interactive video support. IEEE Comput. 43(9): 54–60
4. Kangasharju, J., Hartanto, F., Reisslein, M., Ross, K.W.: Distributing layered encoded video through caches. In: Proceedings of IEEE INFOCOM, pp. 622–636 (2001)
5. Markatchev, N., Williamson, C.: WebTraff: A GUI for web proxy cache workload modeling and analysis. In: IEEE International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunications Systems, vol. 10, pp. 356–363 (2002)