http://reply.papertrans.cn/4/303/30213/30213-31.png
Submitted on: 02 June 2006.
Revised on: 22 June 2006.
Accepted on: 01 July 2006.
NULL
Submitted on: 15 October 2000.
Revised on: 04 November 2000.
Accepted on: 22 November 2000.
NULL
Submitted on: 10 May 2023.
Revised on: 14 June 2023.
Accepted on: 10 July 2023.
Urban Science---MDPI
http://reply.papertrans.cn/4/303/30213/30213-35.png
http://reply.papertrans.cn/4/303/30213/30213-36.png