8Sara J. Scherr and Andy White, 2002, Outline for Presentation-Factors to Consider in Choosing Instruments to Promote Environmental Services [A]. Workshop on Payment Schemes for Environmental Services, Apr 22~23, Beijing.
9Luis Gamez, 2002, Outline for Presentation-The Use of Market Instruments for Environmental Services in Costa Rica[A]. Workshop on Payment Schemes for environmental Services, Apr 22~23, Beijing.
10Henry Shipley FLI, MRTPI. The evolution of derelict land reclamation within the United Kingdom: a local government perspective[A]. Addr essed to Mine Land Reclamation and Ecological Restoration for the 21Century Beijing International Symposium on Land Reclamatiom. 2000.7~10.