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Submitted on: 24 August 2016.
Revised on: 17 September 2016.
Accepted on: 17 October 2016.
___________________Journal of Infrastructure Policy and Development
Submitted on: 22 February 2000.
Revised on: 23 March 2000.
Accepted on: 06 May 2000.
___________________Journal of Infrastructure Policy and Development
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http://reply.papertrans.cn/2/174/17400/17400-35.png
Submitted on: 04 October 2012.
Revised on: 21 January 2013.
Accepted on: 22 February 2013.
___________________Journal of Infrastructure Policy and Development