3PITAC.Report to the President on Digital Libraries:Universal Access to Human Knowledge[EB/OL].(2001-02-09)[2013-10-05].http://www.nitrd.gov/Pubs/pitac/index.html.
4IFLA/UNESCO Manifesto for Digital Libraries.Manifesto endorsed by the 36th session of the General Conference of UNESC O[EB/O L].(2013-07-10)[2013-10-05].http://www.ifla.org/publications/iflaunesco-manifesto-for-digital-libraries.
7Zhang X L.Developing MetaKnowledge Services:The Next Paradigm for Digital Libraries[C].Proceedings of the 13th International Conference on Asia-Pacific Digital Libraries,Beijing,China.New York,USA:Springer,2011:3.
2Gatenby Janifer.The Networked Library Service Layer:Sharing Data for More Effective Management and Co-operation [J]. Ariadne:A Web & Print Magazine of Internet Issues for Librarians & Information Specialists. 2008, Vol. 30 Issue 56: 8-8.
3Robert Fox.Library in the clouds[J]. OCLC Systems & Services. 2009, Vol. 25 Issue 3: 156-161.
4Dougherty.William C.Can Digital Resources Truly Be Preserved? [J]. Journal of Academic Librarianship. Sep2010, Vol. 36 Issue 5: 445-448.