Submitted on: 09 August 2003.
Revised on: 25 August 2003.
Accepted on: 02 September 2003.
NETWORKS & SPATIAL ECONOMICS---SPRINGER
Submitted on: 25 November 2010.
Revised on: 15 December 2010.
Accepted on: 11 January 2011.
NETWORKS & SPATIAL ECONOMICS
Submitted on: 04 December 2018.
Revised on: 22 December 2018.
Accepted on: 11 January 2019.
NETWORKS & SPATIAL ECONOMICS---SPRINGER
http://reply.papertrans.cn/3/229/22856/22856-14.png
http://reply.papertrans.cn/3/229/22856/22856-15.png
http://reply.papertrans.cn/3/229/22856/22856-16.png
Submitted on: 30 January 2019.
Revised on: 14 February 2019.
Accepted on: 23 February 2019.
NETWORKS & SPATIAL ECONOMICS
Submitted on: 01 October 2020.
Revised on: 01 November 2020.
Accepted on: 25 November 2020.
NETWORKS & SPATIAL ECONOMICS
http://reply.papertrans.cn/3/229/22856/22856-19.png
http://reply.papertrans.cn/3/229/22856/22856-20.png