3[1]Guidelines on Best Practices for Using Electronic Information: http://www.ispo/dlm/dotaument/quideline.html
4[2]Digital Preservation Needs and Requirement in RLG Member Institution:http://www.rlq.org/preserv/diqpres.html
5[3]Susan Haigh "A Glossary of Digital Library Standards, Protocols and Formats, May 6 1998: www.nlcbnc.ca/pubs/netnotes/notes54.htm"
6[4]Collaboration among National Libraries in the Preservation of Digital Information, Nationl Library News, Vol.31, No.3-4.
7[5]Digital Preservation Guidelines:Tne State of the art in libraries musemns and archives, European Comities 1998: www.echo.lu/digicuh/en/backfrd.html
8[6]Research Libraries Group, 16 July 1999, R (G-)LF Task Force on Policy & Practice for long. term Retention of Digital Materials: www.rlq.orq/preser/digirliqdlf99.html
