Digital Library Federation (2004) Digital Library Federation Web-site Retrieved March 17, 2004 from http://www.diglib.org/ 
Gartner, Richard (2002).  METS: Metadata Encoding and Transmission Standard. JISC Techwatch report TSW 02-05, October 2002. Retrieved March 17, 2004 from http://www.jisc.ac.uk/index.cfm?name=techwatch_report_0205 
Gartner, Richard (2003).  MODS: Metadata Object Description Schema. JISC Techwatch report TSW 03-06, 2003. Retrieved March 17, 2004 from http://www.jisc.ac.uk/index.cfm?name=techwatch_report_0306 
International Federation of Library Associations. IFLA DIGITAL LIBRARIES: Metadata Resources webpages. Retrieved March 17, 2004 from http://www.ifla.org/II/metadata.htm 
Library of Congress.  AV Prototype Project Working Documents Extension Schemas for the Metadata Encoding and Transmission Standard. Retrieved March 17, 2004 from http://lcweb.loc.gov/rr/mopic/avprot/metsmenu2.html
Library of Congress (2004).  METS Official Web-site. Retrieved March 17, 2004 from http://www.loc.gov/standards/mets/
Library of Congress Help Desk  (2003).  METS: An Overview & Tutorial. Retrieved March 17, 2004 from 
http://www.loc.gov/standards/mets/METSOverview.html 
Library of Congress. VIDEOMD: Video Technical Metadata Extension Schema   Initial Version:  VMD_020322.xsd. Retrieved March 17, 2004 from http://lcweb2.loc.gov/mets/Schemas/VMD.xsd