8W. Jaeger, 1998, A Theoretical Basts for the Envtronmental Inverted-U Curve and Implications for International Trade,Williams College.
9Ruth Greenspan Bell, 2003, "Choosing Environmental Policy Instruments in the Real World", aper prepared for the OECD Global Forum on Sustainable Development:Emissions Trading.
10Kathuria, V., 2006, “Controlling Water Pollution in Developing and Transition Countries: Lessons from Three Successful Cases”, Journal of Environment Management, 78, pp.405-26.