1. United Nations DoEaSA Population Division.World Population Ageing2015.United Nations New York. 2015.
2. World Health Organization. Global Health Observatory data repository;Health expenditure ratios by country 1995‐2014 India.2014;http://apps.who.int/gho/data/view.main.HEALTHEXPRATIOIND?lang=en 2017.
3. The impoverishing effect of healthcare payments in India: new methodology and findings;Berman P;Econ Pol Wkly,2010
4. Catastrophic and impoverishing effects of health expenditure: new evidence from the Western Balkans