http://reply.papertrans.cn/1/87/8653/8653-31.png
Submitted on: 16 December 2000.
Revised on: 04 April 2001.
Accepted on: 10 May 2001.
___________________Environmental Innovation and Societal Transitions
http://reply.papertrans.cn/1/87/8653/8653-33.png
http://reply.papertrans.cn/1/87/8653/8653-34.png
http://reply.papertrans.cn/1/87/8653/8653-35.png
http://reply.papertrans.cn/1/87/8653/8653-36.png