2Scott J. Callan and Janet M. Thomas,2007,En- vironmental Economics & Management: Theory, Policy and Application, (4th Edition), Thomson Learning.
3Bemelmans-Videc, M.L.,R.C.Rist, and E.Ve- dung,1998,Carrots, Sticks, and Sermons: Policy Instru- ments and Their Evaluation. New Brunswick,NJ: Trasaction.
5Lundqvist, L.J. 2000. Implementation from Above: The Ecology of Sweden's New Environmental Governance. Gothenburg: University of Gothenburg, Department of Political Science.
6Eric Cowan,1999,Topical Issues in Environ- mental Finance, Research paper Commionsioned bythe Acia Branch of the Canadian International Devel- opment Agency, CIDA.
9U.S. Congressional Budget Office. Analyzing the Duration of Cleanup at Sites on Superfund's Na- tional Priorities List [EB/OL]. Washington DC: U.S. Congressional Budget Office. March 1,1994,http://www. cbo.gov/publication/15083 ?index=4889.