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2. Final Report. Canada’s Aging Population: Seizing the Opportunity;Special Senate Committee on Aging,2009
3. A Society for All Ages. Challenges and Opportunities. Report of the UNECE Ministerial Conference on Ageing;Economic Commission for Europe,2008
4. Ageing Characterises the Demographic Perspectives of the European Societies;Giannakouris,2008
5. Active Ageing and Solidarity between Generations. A Statistical Portrait of the European Union 2012;Eurostat