Information technology -- Multimedia framework (MPEG-21) -- Part 20: Contract Expression Language
This standard has been revised by ISO/IEC 21000-20:2016
ISO/IEC 21000-20:2013 specifies a language for representing contracts in the Multimedia Framework formed for the transaction of MPEG-21 Digital Items or services related to the MPEG-21 Framework.
A standard is reviewed every 5 years
Revisions / Corrigenda