1. Dublin Core Metadata Initiative,
http://dublincore.org/
2. IEEE Final LOM Draft Standard,
http://ltsc.ieee.org/wg12/20020612-Final-LOM-Draft.html
3. Metadata Encoding & Transmission Std.,
http://www.loc.gov/standards/mets/
4. Open Archives Initiative Protocol for Metadata Harvesting,
http://www.openarchives.org/pmh/
5. SCORM,
http://www.adlnet.gov/capabilities/scorm