1. The World in 2014. ICT Facts and Figures
http://www.itu.int/en/ITU-D/Statistics/Documents/facts/ICTFactsFigures2014-e.pdf
2. 2 Billion Smart Phone Users by 2015: 83% of Internet Usage from Mobiles (Study)
http://dazeinfo.com/2014/01/23/smartphone-users-growth-mobile-internet-2014–2017/
3. eMarketer Smartphone Users Worldwide Will Total 1.75 Billion in 2014: Mobile Users Pick up Smartphones as They Become More Affordable, 3G and 4G Networks Advance
http://www.emarketer.com/Article/Smartphone-Users-Worldwide-Will-Total-175-Billion-2014/1010536
4. Usability and Feasibility of PmEB: A Mobile Phone Application for Monitoring Real Time Caloric Balance
5. Behavior Change Interventions Delivered by Mobile Telephone Short-Message Service