Submitted on: 06 June 2019.
Revised on: 17 July 2019.
Accepted on: 29 July 2019.
___________________Journal of Numerical Mathematics
Submitted on: 06 March 2010.
Revised on: 18 April 2010.
Accepted on: 02 June 2010.
___________________Journal of Numerical Mathematics
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Submitted on: 26 October 2020.
Revised on: 15 February 2021.
Accepted on: 25 March 2021.
___________________Journal of Numerical Mathematics
Submitted on: 28 July 1999.
Revised on: 04 September 1999.
Accepted on: 23 September 1999.
___________________Journal of Numerical Mathematics
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Submitted on: 18 June 2003.
Revised on: 23 September 2003.
Accepted on: 13 November 2003.
___________________Journal of Numerical Mathematics
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