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Submitted on: 24 May 2004.
Revised on: 17 June 2004.
Accepted on: 14 July 2004.
Studies in Economics and Finance
Submitted on: 30 June 2023.
Revised on: 21 July 2023.
Accepted on: 27 July 2023.
Studies in Economics and Finance
Submitted on: 31 December 2012.
Revised on: 27 January 2013.
Accepted on: 07 February 2013.
Studies in Economics and Finance
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http://reply.papertrans.cn/3/289/28874/28874-16.png
Submitted on: 08 November 2014.
Revised on: 27 November 2014.
Accepted on: 03 December 2014.
Studies in Economics and Finance
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Submitted on: 19 June 2018.
Revised on: 09 July 2018.
Accepted on: 20 July 2018.
Studies in Economics and Finance
Submitted on: 08 August 2006.
Revised on: 20 September 2006.
Accepted on: 05 October 2006.
Studies in Economics and Finance