Submitted on: 18 June 2007.
Revised on: 11 July 2007.
Accepted on: 04 September 2007.
___________________Financial Innovation---SPRINGER
Submitted on: 20 November 2017.
Revised on: 21 December 2017.
Accepted on: 11 January 2018.
___________________Financial Innovation---SPRINGER
Submitted on: 05 March 2024.
Revised on: 23 April 2024.
Accepted on: 17 May 2024.
___________________Financial Innovation---SPRINGER
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Submitted on: 27 August 2020.
Revised on: 21 October 2020.
Accepted on: 19 November 2020.
___________________Financial Innovation---SPRINGER
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Submitted on: 02 May 2004.
Revised on: 15 June 2004.
Accepted on: 09 August 2004.
___________________Financial Innovation---SPRINGER
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