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Submitted on: 22 December 2003.
Revised on: 21 March 2004.
Accepted on: 12 May 2004.
___________________Financial Innovation---SPRINGER
Submitted on: 14 August 2001.
Revised on: 17 November 2001.
Accepted on: 03 December 2001.
___________________Financial Innovation---SPRINGER
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Submitted on: 11 September 2022.
Revised on: 21 October 2022.
Accepted on: 16 November 2022.
___________________Financial Innovation---SPRINGER
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Submitted on: 22 March 2001.
Revised on: 26 May 2001.
Accepted on: 08 June 2001.
___________________Financial Innovation---SPRINGER