Submitted on: 12 July 2012.
Revised on: 06 October 2012.
Accepted on: 29 October 2012.
___________________CANADIAN JOURNAL OF STATISTICS-REVUE CANADIENNE DE STATISTIQUE
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Submitted on: 11 December 2000.
Revised on: 03 February 2001.
Accepted on: 26 March 2001.
___________________CANADIAN JOURNAL OF STATISTICS-REVUE CANADIENNE DE STATISTIQUE
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Submitted on: 02 June 2008.
Revised on: 22 July 2008.
Accepted on: 18 September 2008.
___________________CANADIAN JOURNAL OF STATISTICS-REVUE CANADIENNE DE STATISTIQUE
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Submitted on: 27 April 1999.
Revised on: 16 July 1999.
Accepted on: 03 August 1999.
___________________CANADIAN JOURNAL OF STATISTICS-REVUE CANADIENNE DE STATISTIQUE
Submitted on: 08 June 2012.
Revised on: 14 September 2012.
Accepted on: 04 November 2012.
___________________CANADIAN JOURNAL OF STATISTICS-REVUE CANADIENNE DE STATISTIQUE