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Submitted on: 13 August 2015.
Revised on: 18 September 2015.
Accepted on: 13 November 2015.
___________________Journal of Sustainable Finance & Investment
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Submitted on: 28 June 2009.
Revised on: 06 September 2009.
Accepted on: 20 October 2009.
___________________Journal of Sustainable Finance & Investment