Submitted on: 18 March 2005.
Revised on: 19 June 2005.
Accepted on: 11 August 2005.
___________________Journal of Empirical Finance---ELSEVIER
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Submitted on: 10 July 2009.
Revised on: 10 August 2009.
Accepted on: 22 September 2009.
___________________Journal of Empirical Finance---ELSEVIER
Submitted on: 30 January 2019.
Revised on: 12 March 2019.
Accepted on: 06 April 2019.
___________________Journal of Empirical Finance---ELSEVIER