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Submitted on: 11 December 2017.
Revised on: 21 February 2018.
Accepted on: 07 March 2018.
___________________Journal of Economics---SPRINGER WIEN
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Submitted on: 18 September 2021.
Revised on: 25 December 2021.
Accepted on: 13 January 2022.
___________________Journal of Economics---SPRINGER WIEN
Submitted on: 12 December 2022.
Revised on: 27 March 2023.
Accepted on: 03 May 2023.
___________________Journal of Economics---SPRINGER WIEN
Submitted on: 08 December 2009.
Revised on: 03 April 2010.
Accepted on: 18 May 2010.
___________________Journal of Economics---SPRINGER WIEN
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