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http://www.un.org/en/development/desa/population/publications/pdf/ageing/WorldPopulationAgeing2013.pdf
2. The burden of disease in older people and implications for health policy and practice
3. Older people living in the community—Nutritional needs, barriers and interventions: A literature review
http://www.scie-socialcareonline.org.uk/older-people-living-in-the-community-nutritional-needs-barriers-and-interventions-a-literature-review/r/a11G00000017xKZIAY
4. Assessment and management of nutrition in older people and its importance to health;Ahmed;Clin. Interv. Aging,2010
5. Under-nutrition in old age: diagnosis and management