http://reply.papertrans.cn/1/82/8168/8168-11.png
Submitted on: 16 June 2021.
Revised on: 12 August 2021.
Accepted on: 12 September 2021.
___________________Ekonomika i Matematiceskie Metody-Economics and Mathematical Methods
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Submitted on: 30 September 2011.
Revised on: 12 November 2011.
Accepted on: 11 December 2011.
___________________Ekonomika i Matematiceskie Metody-Economics and Mathematical Methods
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Submitted on: 17 July 2000.
Revised on: 16 September 2000.
Accepted on: 30 October 2000.
___________________Ekonomika i Matematiceskie Metody-Economics and Mathematical Methods
Submitted on: 09 June 2005.
Revised on: 08 July 2005.
Accepted on: 25 August 2005.
___________________Ekonomika i Matematiceskie Metody-Economics and Mathematical Methods
Submitted on: 03 March 2019.
Revised on: 04 April 2019.
Accepted on: 26 April 2019.
___________________Ekonomika i Matematiceskie Metody-Economics and Mathematical Methods
Submitted on: 04 July 1999.
Revised on: 08 October 1999.
Accepted on: 31 October 1999.
___________________Ekonomika i Matematiceskie Metody-Economics and Mathematical Methods
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