3Narayan D. Toward participatory research[Z]. Washington, D.C.: World Bank,1996.
4[1]Walley N,Whitehead B.It's not easy being green[J].Harvard Business Review,May-June 1994:46-52.
5[2]Albrecht J.Environmental costs and competitiveness[EB/OL].a product-specific test of the Poter hypothesis,working paper at Http://www.ssrn.com[30 September 2001].
6[4]Wagner M.A Review of empirical studies concerning the relationship between environmental and economic performance[A].What Does the Evidence Tell Us[C]? Center for Sustainability Management (CSM):Luneburg.
7[6]Wagner M.The relationship between environmental and economic performance of firms,paper to the 2nd POSTI Meeting in collaboration with the ESST Annual Scientific conference [A],Strasbourg.2000.http://www.esst.uio.no/posti/workshops/wagner.html[25 September 2001].
8[7]Tyteca D.Sustainability indicators at the firm level-pollution and regulation as industry policy[J].Journal of Environmental Economics and management,1999,30:282-300.
9[9]Greene W H.Eecnometric Analysis[R].4th ed,Prentice-Hall:London,2000.
10[10]Hart S L,Ahuja G.Does it pay to be green? An empirical examination of the relationship between emission reduction and firm performance[J].Business Strategy and the Environment,1996,5:30-37.
