1. CISCO “Cisco Visual Networking Index: Global Mobile Data Traffic Forecast Update,”
2. Sandvine “Global Interet Phenomena Report,” 2012
3. Reliance Reliance 3G Plans & Pricing http://www.rcom.co.in/Rcom/personal/3G/HTML/PostpaidDataPlans.html
4. ROGERS hi-speed internet FAQ http://www.keepingpace.ca/faq.html
5. Matthew Lasar arstechnica “EU cracks down on “bill shock” roaming horror stories,” arstechnica http://arstechnica.com/tech-policy/2010/03/eu-cracks-down-on-bill-shock-roaming-horror-stories/