Submitted on: 19 October 2020.
Revised on: 03 January 2021.
Accepted on: 03 March 2021.
___________________Computational and Mathematical Methods
Submitted on: 07 February 2008.
Revised on: 07 April 2008.
Accepted on: 27 May 2008.
___________________Computational and Mathematical Methods
Submitted on: 29 February 2000.
Revised on: 30 April 2000.
Accepted on: 24 June 2000.
___________________Computational and Mathematical Methods
Submitted on: 29 April 2017.
Revised on: 24 July 2017.
Accepted on: 26 August 2017.
___________________Computational and Mathematical Methods
Submitted on: 19 December 2009.
Revised on: 03 March 2010.
Accepted on: 24 April 2010.
___________________Computational and Mathematical Methods
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http://reply.papertrans.cn/1/62/6170/6170-17.png
Submitted on: 16 January 2001.
Revised on: 10 May 2001.
Accepted on: 14 June 2001.
___________________Computational and Mathematical Methods
Submitted on: 23 April 2016.
Revised on: 09 June 2016.
Accepted on: 23 July 2016.
___________________Computational and Mathematical Methods
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