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2. Mobile data traffic surpasses voice, 2010. http://www.ericsson.com/thecompany/press/releases/2010/03/1396928.
3. Customers angered as iPhones overload AT&T, 2009. http://www.nytimes.com/2009/09/03/technology/companies/03att.html.
4. Wireless data: the end of all-you-can-eat? 2010. http://www.businessweek.com/magazine/content/10_28/b4186034470110.htm.
5. Forfaits 3G: orange siffle la fin de l’Internet mobile illimité. http://www.zdnet.fr/actualites/forfaits-3g-orange-siffle-la-fin-de-l-internet-mobile-illimite-39756186.htm.