What are digital libraries?/Donald J.. Digital libraries: Definitions, issues and challenges / Gary Cleveland // UDT Occasional paper #8.
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5 What are digital libraries?/Donald J Waters// CLIR, No 4, July/August 1999 URL: http://WWW.clir.org/pubs/issues/issue04.html
6 Digital libraries: Definitions, issues and challenges / Gary Cleveland // UDT Occasional paper #8 URL: