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Submitted on: 23 August 2003.
Revised on: 05 December 2003.
Accepted on: 24 January 2004.
___________________JOURNAL OF MULTIVARIATE ANALYSIS
Submitted on: 10 January 2009.
Revised on: 28 March 2009.
Accepted on: 01 May 2009.
___________________JOURNAL OF MULTIVARIATE ANALYSIS
Submitted on: 19 December 2001.
Revised on: 11 January 2002.
Accepted on: 25 January 2002.
___________________JOURNAL OF MULTIVARIATE ANALYSIS
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