Submitted on: 30 October 1998.
Revised on: 07 January 1999.
Accepted on: 21 January 1999.
___________________COMPUTERS & MATHEMATICS WITH APPLICATIONS
Submitted on: 28 July 2023.
Revised on: 25 November 2023.
Accepted on: 26 December 2023.
___________________COMPUTERS & MATHEMATICS WITH APPLICATIONS
Submitted on: 30 September 2020.
Revised on: 18 January 2021.
Accepted on: 18 February 2021.
___________________COMPUTERS & MATHEMATICS WITH APPLICATIONS
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Submitted on: 19 July 2023.
Revised on: 28 August 2023.
Accepted on: 19 September 2023.
___________________COMPUTERS & MATHEMATICS WITH APPLICATIONS
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