1. World population prospects – the 2010 revision, volume 1 comprehensive tables, population division;UN,2013
2. World in 2050: the BRICs and beyond: prospects, challenges and opportunities;PWC,2013
3. Goldman Sachs. India revisited, white paper, Goldman Sachs; 2010 [].
4. India development update, October 2013;World Bank,2013
5. World population prospects: the 2009 revision, highlights;UN,2013