6SHAFIK N, BANDYOPADHYAY S.Economic growth and environmental quality: time series and cross - country evidence[ R]. Background paper for the world Development Report, 1992.
7FRIEDL B, RAYNER A J, BATES J M. The Enviromental Kuznets Crave: an empirical analysis[J]. Enviroment and Development Economics, 1997(2) :401 - 416.
8BIRDSLL N.Another look at population and global wanting.Population,health, and mutrution policy research [ R]. Washington, DC: World Bank, WPS 1020: 1992.
9MALTHUS T R.Essay on the principle of population[M].7^th ed. Dent, London,UK, 1798.
10BOSERUP E.Population and technological change: a study of long-term trends [M]. Chicago,LL. : University of Chicago Press, 1981.