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Submitted on: 05 March 2001.
Revised on: 28 May 2001.
Accepted on: 09 June 2001.
___________________Journal of Economics Finance and Administrative Science
Submitted on: 04 July 1999.
Revised on: 27 September 1999.
Accepted on: 06 November 1999.
___________________Journal of Economics Finance and Administrative Science
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Submitted on: 25 July 2008.
Revised on: 20 November 2008.
Accepted on: 14 January 2009.
___________________Journal of Economics Finance and Administrative Science
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Submitted on: 26 August 2009.
Revised on: 30 November 2009.
Accepted on: 26 December 2009.
___________________Journal of Economics Finance and Administrative Science
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Submitted on: 14 July 2003.
Revised on: 09 August 2003.
Accepted on: 13 September 2003.
___________________Journal of Economics Finance and Administrative Science