1. BARTLETT H, PHILIPS D R, 1997. Ageing and aged care in the People’s Republic of China: national and local issues and perspectives [J]. Health & Place, 3(3): 149–159.
2. Beijing Statistical Bureau, 2002. External people have postponed the ageing process of Beijing [R]. http://www.bjstats.gov.cn/was40/detail? record=13&channelid=42373&presearchword=014.(in Chinese)
3. CHEN Yao-xian, 2002. Reformation of social system and the aspects related capital market [A]. In: CAO Feng-qi, CHEN Xue-rong (eds.). New Ideal, New Conception, New Strategy in the Economic Field[C]. Beijing: New World Press, 295–326. (in Chinese)
4. DUAN Min-fang, 2003. Status and development of migration of population in China[J]. Journal of Zhongnan University of Economics and Law, 6: 16–20. (in Chinese)
5. ESCAP (Economic and Social Commission for Asia and the Pacific), 2002. Report on the regional survey on ageing in Asia-Pacific Seminar on Regional Follow up to the Second World Assembly on Ageing [Z]. Shanghai: the United Nations Economic and Social Commission for Asia and the Pacific.