1. Brown, A. (2006), Digital Preservation Technical Paper No. 2: The PRONOM UID Scheme: A Scheme of Persistent Unique Identifiers for Representation Information, The National Archives (UK), available at: www.nationalarchives.gov.uk/aboutapps/pronom/pdf/pronom_unique_identifier_scheme.pdf.
2. CASPAR Consortium (2006), D4101: User Requirements and Scenario Specifications (CASPAR‐D4101‐SCEN‐0101‐1_0), available at: www.casparpreserves.eu/Members/metaware/Deliverables/user‐requirements‐and‐scenario‐specifications/at_download/file.
3. CASPAR Consortium (2007), D1101: Review of State of the Art (CASPAR‐D1101‐TN‐0101‐1_0), available at: www.casparpreserves.eu/Members/cclrc/Deliverables/review‐of‐state‐of‐the‐art‐1/at_download/file.
4. CASPAR Consortium (2008), D2201: Preservation DataStore Interface (CASPAR‐D2201‐TN‐0101‐1_0), available at: www.casparpreserves.eu/Members/cclrc/Deliverables/preservation‐datastore‐interface/at_download/file.
5. Consultative Committee for Space Data Systems (CCSDS) (2002), Reference Model for an Open Archival Information System (OAIS)), Blue Book Issue 1, available at: http://public.ccsds.org/publications/archive/650x0b1.pdf.