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Submitted on: 23 October 2005.
Revised on: 29 December 2005.
Accepted on: 14 January 2006.
___________________Extremes---SPRINGER
Submitted on: 06 December 2023.
Revised on: 03 April 2024.
Accepted on: 09 May 2024.
___________________Extremes---SPRINGER
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Submitted on: 30 November 2003.
Revised on: 09 January 2004.
Accepted on: 10 February 2004.
___________________Extremes---SPRINGER