Submitted on: 10 July 2014.
Revised on: 05 August 2014.
Accepted on: 03 October 2014.
___________________Journal of Interdisciplinary Economics
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Submitted on: 12 August 2010.
Revised on: 04 October 2010.
Accepted on: 20 October 2010.
___________________Journal of Interdisciplinary Economics
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Submitted on: 24 March 2012.
Revised on: 27 May 2012.
Accepted on: 17 June 2012.
___________________Journal of Interdisciplinary Economics
Submitted on: 12 April 2019.
Revised on: 09 July 2019.
Accepted on: 24 August 2019.
___________________Journal of Interdisciplinary Economics