Submitted on: 18 March 2012.
Revised on: 04 May 2012.
Accepted on: 20 May 2012.
___________________Econometrics and Statistics---ELSEVIER
Submitted on: 28 October 2002.
Revised on: 19 February 2003.
Accepted on: 06 April 2003.
___________________Econometrics and Statistics---ELSEVIER
Submitted on: 18 June 2004.
Revised on: 09 September 2004.
Accepted on: 24 October 2004.
___________________Econometrics and Statistics---ELSEVIER
Submitted on: 29 July 2023.
Revised on: 17 September 2023.
Accepted on: 08 November 2023.
___________________Econometrics and Statistics---ELSEVIER
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Submitted on: 02 September 2003.
Revised on: 25 November 2003.
Accepted on: 16 January 2004.
___________________Econometrics and Statistics---ELSEVIER
Submitted on: 28 December 2009.
Revised on: 23 April 2010.
Accepted on: 23 May 2010.
___________________Econometrics and Statistics---ELSEVIER
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Submitted on: 06 May 2018.
Revised on: 21 July 2018.
Accepted on: 02 August 2018.
___________________Econometrics and Statistics---ELSEVIER
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