Submitted on: 04 December 1999.
Revised on: 03 February 2000.
Accepted on: 01 April 2000.
___________________BIT NUMERICAL MATHEMATICS---SPRINGER
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Submitted on: 31 May 2011.
Revised on: 17 September 2011.
Accepted on: 06 October 2011.
___________________BIT NUMERICAL MATHEMATICS---SPRINGER
Submitted on: 09 March 2000.
Revised on: 04 July 2000.
Accepted on: 28 August 2000.
___________________BIT NUMERICAL MATHEMATICS---SPRINGER
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