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2. Cisco Visual Networking Index: Forecast and Methodology 2011 http://www.cisco.com/en/US/solutions/collateral/ns341/ns525/ns537/ns705/ns827/white_paper_c11-481360.pdf
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4. IMC '07;Cha,2007
5. OTT Providers Must Address Delivery Network Access to Remain Competitive http://www.isuppli.com/Media-Research/News/Pages/OTT-Providers-Must-Address-Delivery-Network-Access-to-Remain-Competitive.aspx