Submitted on: 14 September 2011.
Revised on: 14 October 2011.
Accepted on: 01 December 2011.
___________________BERNOULLI---INT STATISTICAL INST
Submitted on: 31 December 2003.
Revised on: 15 February 2004.
Accepted on: 22 March 2004.
___________________BERNOULLI---INT STATISTICAL INST
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Submitted on: 13 May 2002.
Revised on: 06 June 2002.
Accepted on: 20 July 2002.
___________________BERNOULLI---INT STATISTICAL INST
Submitted on: 13 February 2017.
Revised on: 19 May 2017.
Accepted on: 08 June 2017.
___________________BERNOULLI---INT STATISTICAL INST
Submitted on: 11 June 2016.
Revised on: 04 August 2016.
Accepted on: 20 August 2016.
___________________BERNOULLI---INT STATISTICAL INST
Submitted on: 21 March 2021.
Revised on: 14 July 2021.
Accepted on: 26 August 2021.
___________________BERNOULLI---INT STATISTICAL INST
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