Submitted on: 21 December 2005.
Revised on: 06 January 2006.
Accepted on: 21 January 2006.
Sankhya-Series A-Mathematical Statistics and Probability
Submitted on: 01 March 2005.
Revised on: 10 April 2005.
Accepted on: 22 April 2005.
Sankhya-Series A-Mathematical Statistics and Probability
Submitted on: 13 October 2012.
Revised on: 28 October 2012.
Accepted on: 08 November 2012.
Sankhya-Series A-Mathematical Statistics and Probability
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Submitted on: 31 March 1999.
Revised on: 24 April 1999.
Accepted on: 03 May 1999.
Sankhya-Series A-Mathematical Statistics and Probability
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