3Horrigan JB. Use of cloud computing applications and services . Pew Internet and the American Life Project. [2009 -5 -15]. http:// www. pewintemet.org/-/media//Files/Reports/2008/PIP _ Cloud. Memo. pdf. pdf.
5Gatenby J. The Networked Library Service Layer: Sharing Data for More Effective Management and Co - operation. Ariadne, Issue 56, July 2008. [2009 -5 - 15]. http://www. ariadne. ac. uk/issue56/ gatenby/.
6Stephens M. Ten Trends & Technologies for 2009. Tame The Web, 2009 - 1 - 12. [2009 -5 - 15 ]. http://tametheweb.com/2009/01/ 12/ten - trends - technologies - for - 2009/.