Submitted on: 14 January 2001.
Revised on: 30 April 2001.
Accepted on: 21 June 2001.
___________________International Journal of Ecological Economics & Statistics
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Submitted on: 03 September 2001.
Revised on: 18 November 2001.
Accepted on: 14 January 2002.
___________________International Journal of Ecological Economics & Statistics
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Submitted on: 22 May 2004.
Revised on: 14 August 2004.
Accepted on: 26 September 2004.
___________________International Journal of Ecological Economics & Statistics
Submitted on: 30 May 2003.
Revised on: 03 August 2003.
Accepted on: 03 September 2003.
___________________International Journal of Ecological Economics & Statistics
Submitted on: 08 April 2015.
Revised on: 24 July 2015.
Accepted on: 15 August 2015.
___________________International Journal of Ecological Economics & Statistics
Submitted on: 10 January 2023.
Revised on: 30 April 2023.
Accepted on: 06 June 2023.
___________________International Journal of Ecological Economics & Statistics