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Submitted on: 22 November 2020.
Revised on: 20 January 2021.
Accepted on: 22 February 2021.
___________________APPLIED MATHEMATICAL MODELLING
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Submitted on: 12 January 2017.
Revised on: 11 April 2017.
Accepted on: 27 April 2017.
___________________APPLIED MATHEMATICAL MODELLING
Submitted on: 08 September 2014.
Revised on: 04 December 2014.
Accepted on: 21 December 2014.
___________________APPLIED MATHEMATICAL MODELLING
Submitted on: 14 February 2024.
Revised on: 28 May 2024.
Accepted on: 17 July 2024.
___________________APPLIED MATHEMATICAL MODELLING