Submitted on: 09 June 2015.
Revised on: 02 July 2015.
Accepted on: 25 July 2015.
___________________ENVIRONMENTAL & RESOURCE ECONOMICS
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Submitted on: 03 September 2012.
Revised on: 23 December 2012.
Accepted on: 22 January 2013.
___________________ENVIRONMENTAL & RESOURCE ECONOMICS
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Submitted on: 20 January 2018.
Revised on: 09 April 2018.
Accepted on: 21 April 2018.
___________________ENVIRONMENTAL & RESOURCE ECONOMICS