1. http://en.wikipedia.org/wiki/List_of_countries_by_GDP_(nominal)
2. http://pib.nic.in/archieve/others/2013/feb/d2013022806.pdf
3. http://articles.economictimes.indiatimes.com/2010-07-08/news/27631294_1_bwa-spectrum-augere-telecom-licences
4. Connecting to Education by WiMAX Technology.
http://www.k12blueprint.com/sites/default/files/NMU_WiMax.pdf
5. Evans D. Potential uses of wireless and mobile Learning. Landscape study in wireless and mobile learning in the post-16 sector, Open University, April 2005.