1. EU-FP6: BRICKS – Building Resources for Integrated Cultural Knowledge Services (IST 507457) (2007), http://www.brickscommunity.org
2. National Information Standards Organization (NISO): Understanding metadata (2004), http://www.niso.org/standards/resources/UnderstandingMetadata.pdf
3. ALCTS/CCS/Committee on Cataloging: Description and Access: Task force on metadata: Final report (June 2000), http://www.libraries.psu.edu/tas/jca/ccda/tf-meta6.html
4. Chan, L.M., Zeng, M.L.: Metadata Interoperability and Standardization – A Study of Methodology Part I + II. D-Lib Magazine 12(6) (June 2006)
5. CIDOC Documentation Standards Group: CIDOC Conceptual Reference Model (CRM) – ISO 21127:2006 (December 2006)