Submitted on: 28 April 2002.
Revised on: 19 July 2002.
Accepted on: 09 August 2002.
___________________Economies---MDPI
Submitted on: 18 September 2021.
Revised on: 07 December 2021.
Accepted on: 16 January 2022.
___________________Economies---MDPI
Submitted on: 17 August 2006.
Revised on: 08 December 2006.
Accepted on: 01 January 2007.
___________________Economies---MDPI
Submitted on: 09 September 2023.
Revised on: 30 October 2023.
Accepted on: 26 December 2023.
___________________Economies---MDPI
Submitted on: 01 September 2003.
Revised on: 30 September 2003.
Accepted on: 19 October 2003.
___________________Economies---MDPI
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Submitted on: 12 August 2022.
Revised on: 17 September 2022.
Accepted on: 30 September 2022.
___________________Economies---MDPI
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