1. [1] Mobile Content Forum, Smartphones White Paper 2013-2014, Impress R&D, Tokyo, 2014.
2. [2] D. Irvine, A. Zemke, G. Pusateri, L. Gerlach, R. Chun, and W.M. Jay, “Tablet and smartphone accessibility features in the low vision rehabilitation,” Neuro-Ophthalmology, vol.38, no.2, pp.53-59, 2014.
3. [3] S. Carew, “Touch-screen gadgets alienate blind,” Reuters, 2009. http://www.reuters.com/article/newsOne/idUSTRE5080T320090109
4. [4] AFB AccessWorld: Technology and People Who Are Blind or Visually Impaired, http://www.afb.org/aw/main.asp
5. [5] The Journal of Visual Impairment and Blindness-American foundation for the Blind, http://www.afb.org/info/publications/jvib/