[1] "Section 6.1 Mapping Attributes and Relationships to User Tasks" in International Federation of Library Associations and Institutions, International Federation of Library Associations and Institutions. Functional Requirements for Bibliographic Records: Final Report. Munchen: K.G. Saur, 1998. (UBCIM Publications - New Series, V. 19). Also available as: http://www.ifla.org/VII/s13/frbr/frbr3.htm#6
[3] Consultative Committee for Space Data Systems. Reference Model for an Open Archival Information System (OAIS): Recommendation for Space and Data System Standards, CCSDS 650.0-B-1 Blue Book. Washington, D.C.: CCSDS Secretariat, Program Integration Division (Code M-3), National Aeronautics and Space Administration, January 2002. http://public.ccsds.org/publications/archive/650x0b1.pdf
[4] Library of Congress. METS: Metadata Encoding & Transmission Standard Official Website Washington, D.C.: Library of Congress, [last updated] January 25, 2005. http://www.loc.gov/standards/mets/
[5] Corporation for Public Broadcasting. PBCore: Public Broadcasting Metadata Dictionary Project. http://www.utah.edu/cpbmetadata/