BEAGRIE, Neil. National Digital Preservation Initiatives: An Overview of Developments in Australia, France, the Netherlands, and the United Kingdom and of Related International Activity. CLIR, Council on Library and Information Resources. 2003. URL:<http://www.clir.org/pubs/reports/pub116/pub116.pdf> BULLOCK, Alison. Preservation of digital information; issues and current status. April 22, 1999. Last updated on February 27, 2001. URL: <http://www.nlc-bnc.ca/publications/1/p1-259-e.html> HEDSTROM, Margaret. Digital preservation; a time bomb for digital libraries. Computer and the Humanities, v.31, n.3, 1997/1998, p.189-202. URL: <http://www.uky.edu/~kiernan/DL/hedstrom.html> HODGE, Gail; FRANGAKIS, Evelyn. Digital Preservation and Permanent Access to Scientific Information: the State of the Practice. Final Report. February 2004. Sponsored by CENDI/ ICSTI. Revised March 2004. TASK FORCE ON THE ARCHING OF DIGITAL INFORMATION. Preserving digital information; report of the Task Force on Archiving of Digital Information; commissioned by the Commission on Preservation - CPA and Access and the Research Libraries Group - RLG. Washington, D.C.: Commission on Preservation and Access, 1996. URL: <http://www.rlg.org/ArchTF>