References
- MPEG Dco. no.6042 Working Draft of 21000-1 MPEG-21 Vision, Technologies and Strategy MPEG MDS Group
- MPEG Dco. no.4813 MPEG-21 Part 2 Digital Item Declaration FDIS MPEG MDS Group
- MPEG Dco. no.4939 MPEG-21 Part 3 Digital Item Identifier FDIS MPEG MDS Group