Submitted on: 27 December 2019.
Revised on: 30 January 2020.
Accepted on: 27 February 2020.
___________________ECONOMIC THEORY---SPRINGER
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Submitted on: 08 February 2007.
Revised on: 16 April 2007.
Accepted on: 02 June 2007.
___________________ECONOMIC THEORY---SPRINGER
Submitted on: 19 January 2000.
Revised on: 06 March 2000.
Accepted on: 11 April 2000.
___________________ECONOMIC THEORY---SPRINGER
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Submitted on: 26 December 2010.
Revised on: 30 March 2011.
Accepted on: 15 May 2011.
___________________ECONOMIC THEORY---SPRINGER