http://reply.papertrans.cn/1/86/8572/8572-21.png
http://reply.papertrans.cn/1/86/8572/8572-22.png
http://reply.papertrans.cn/1/86/8572/8572-23.png
http://reply.papertrans.cn/1/86/8572/8572-24.png
Submitted on: 19 February 2004.
Revised on: 07 May 2004.
Accepted on: 18 June 2004.
___________________Environment and Urbanization ASIA
http://reply.papertrans.cn/1/86/8572/8572-26.png
Submitted on: 28 August 2020.
Revised on: 10 December 2020.
Accepted on: 19 January 2021.
___________________Environment and Urbanization ASIA
Submitted on: 15 November 2000.
Revised on: 27 February 2001.
Accepted on: 11 April 2001.
___________________Environment and Urbanization ASIA
http://reply.papertrans.cn/1/86/8572/8572-29.png
http://reply.papertrans.cn/1/86/8572/8572-30.png