Submitted on: 27 February 2021.
Revised on: 08 April 2021.
Accepted on: 25 May 2021.
___________________Economics and Business Review---SCIENDO
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Submitted on: 17 September 2012.
Revised on: 03 November 2012.
Accepted on: 19 December 2012.
___________________Economics and Business Review---SCIENDO
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Submitted on: 26 June 2019.
Revised on: 11 September 2019.
Accepted on: 02 October 2019.
___________________Economics and Business Review---SCIENDO
Submitted on: 15 August 2015.
Revised on: 03 October 2015.
Accepted on: 01 December 2015.
___________________Economics and Business Review---SCIENDO
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Submitted on: 14 August 2022.
Revised on: 06 September 2022.
Accepted on: 23 October 2022.
___________________Economics and Business Review---SCIENDO
Submitted on: 08 January 2017.
Revised on: 23 February 2017.
Accepted on: 11 March 2017.
___________________Economics and Business Review---SCIENDO
Submitted on: 11 January 2003.
Revised on: 01 April 2003.
Accepted on: 23 May 2003.
___________________Economics and Business Review---SCIENDO