3CCSDS(Consuhative Committee for Space Data Systems), "Reference Model for an Open Archival Information System", http://www.ccsds.org/documents /650x0bl.pdf.
4InterPARES (he International Research on Permanent Authentic Records in Electronic Systems),http://www.interpares.org
5CEDARS (CURL Exemplars in Digital ARchiveS), http://www.leeds.ac.uk/cedars/index.html.
