Submitted on: 08 June 2003.
Revised on: 02 October 2003.
Accepted on: 20 October 2003.
___________________ECONOMIC MODELLING---ELSEVIER
Submitted on: 19 March 2000.
Revised on: 21 June 2000.
Accepted on: 11 August 2000.
___________________ECONOMIC MODELLING---ELSEVIER
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Submitted on: 04 August 2004.
Revised on: 23 October 2004.
Accepted on: 07 December 2004.
___________________ECONOMIC MODELLING---ELSEVIER
Submitted on: 18 December 2020.
Revised on: 06 March 2021.
Accepted on: 27 April 2021.
___________________ECONOMIC MODELLING---ELSEVIER
Submitted on: 10 July 2011.
Revised on: 30 August 2011.
Accepted on: 01 October 2011.
___________________ECONOMIC MODELLING---ELSEVIER
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Submitted on: 18 August 2022.
Revised on: 11 October 2022.
Accepted on: 04 December 2022.
___________________ECONOMIC MODELLING---ELSEVIER
Submitted on: 25 July 2021.
Revised on: 10 November 2021.
Accepted on: 16 December 2021.
___________________ECONOMIC MODELLING---ELSEVIER
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