4Aaron George Grech, Assessing The Sustainability of Pension Reforms in Europe, Centre for Analysis of Social Exclusion [ D ]. London School of Economics,2010.
5Development Research Center of the State Council,the People's Republic of China, China 2030:Building a Modem ,Harmonious ,and Creative High-Income Society[ M ]. World Bank. Washington, D. C. 2012,4- 14.
6European Commission, Green Paper, Towards Adequate, Sustainable and Safe European Pension Systems, Brussels[ M ]. Luxembourg: Publications Office of the European Union,2010.
7European Commission, Objectives and working methods in the area of pensions : Applying the open method of coordination, Joint Report of the Social Protection Committee and the Economic Policy Committee [ M ]. Lux- embourg: Official Publications of the European Communities ,2001.
8Holzmann, Robert and Richard Hinz,Old-Age Income Support in the 21st Century:An International Perspective on Pension Systems and Reform[ M ]. Washington, D. C : World Bank,2005,55 - 58.
9Holzmann, Robert et al, Closing the Coverage Gap: the role of social pensions and other retirement income transfers [ M ]. World Bank. Washington, D. C. 2009,99 - 110.
10OECD, Pensions at a Glance 2011 : Retirement-income Systems In OECD and G20 Countries [ M ]. OECD, 2011,159.
